This quiz works best with JavaScript enabled. Home > English Grammar > Grammar > Parts Of Speech > Verbs > Auxiliary Verbs > Modal Verbs > Modals Of Deduction – Quiz 1 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Modals Of Deduction Quiz 1 (60 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. I think he ..... be French with a name like Luc. A) Must. B) Can't. C) Might not. D) Might/may. Show Answer Correct Answer: D) Might/may. 2. 'Whose bag is this?" It ..... be Mike's. It's on his desk.' A) Would. B) Must. C) Can't. D) None of the above. Show Answer Correct Answer: B) Must. 3. He's not answering the phone. I'm not sure. He ..... be in class. A) Might/may/could. B) Can't. C) Must. D) None of the above. Show Answer Correct Answer: A) Might/may/could. 4. Someone ..... kidnapped my cat. There is a scary note.He is asking for a ransom. A) Should have. B) Must have. C) Might have. D) Can't have. Show Answer Correct Answer: B) Must have. 5. It ..... be far now. We've been driving for hours. A) Might not. B) Can't. C) Must. D) None of the above. Show Answer Correct Answer: B) Can't. 6. He said what?! That ..... A) Can't be true. B) Shouldn't be true. C) Mustn't be true. D) Won't be true. Show Answer Correct Answer: A) Can't be true. 7. They ..... be Spanish, they're speaking French. A) Might. B) Can. C) Could. D) Can't. Show Answer Correct Answer: D) Can't. 8. You ..... be right-but I'm going to check to make sure. A) Must. B) Can't. C) Might. D) None of the above. Show Answer Correct Answer: C) Might. 9. Where's Claire? Her bags are here. So, she ..... gone home. A) Might have. B) Shouldn't have. C) Should have. D) Can't have. Show Answer Correct Answer: D) Can't have. 10. He ..... be speaking Russian-it sounds more like Spanish to me A) Must. B) May. C) Can't. D) Might. Show Answer Correct Answer: C) Can't. 11. You drank 3 bottles of wine? You ..... feel so sick! A) Must. B) May. C) Can't. D) Might not. Show Answer Correct Answer: A) Must. 12. Wallace ..... in Scotland for ten years. Now he lives in London.A. lived B. has lived C. has been living D. had been living A) Has been living. B) Has lived. C) Lived. D) Had been living. Show Answer Correct Answer: C) Lived. 13. Go and look in the kitchen for your gloves. They ..... be in there for sure. A) Could. B) Must. C) Can't. D) None of the above. Show Answer Correct Answer: B) Must. 14. Jack ..... be on holiday. I haven't seen him for a week A) Can. B) Might. C) Must. D) None of the above. Show Answer Correct Answer: B) Might. 15. Why were there no buses yesterday? Maybe it was the snow or they ..... been on strike. A) Must have. B) Might have. C) Couldn't have. D) None of the above. Show Answer Correct Answer: B) Might have. 16. Why ..... she be late for the event? She's usually very punctual. I am a bit worried now. A) Couldn't. B) Can't. C) Must. D) Might. Show Answer Correct Answer: D) Might. 17. When we're sure about something is true, we use. A) Must. B) Can't. C) Could/Might. D) None of the above. Show Answer Correct Answer: A) Must. 18. He ..... gone to the beach. He hates being in the sun! A) Can't have. B) Must have. C) Might have. D) Could have. Show Answer Correct Answer: A) Can't have. 19. He worked hard on his report, then accidentally deleted the file from his computer. He ..... be upset. A) Must. B) Can't. C) Might. D) None of the above. Show Answer Correct Answer: A) Must. 20. I don't know why there weren't any buses yesterday. They ..... gone on strike but I'm not really sure. A) Must have. B) May have. C) Can't have. D) None of the above. Show Answer Correct Answer: B) May have. 21. I'm sure Ben has read my email. A) Ben might have read my email. B) Ben shouldn't have read my email. C) Ben must have read my email. D) Ben can't have read my email. Show Answer Correct Answer: C) Ben must have read my email. 22. Suzanne and Dennis ..... have run away from home. All their belongings are here, nothing is missing. A) May. B) Can't. C) Could. D) None of the above. Show Answer Correct Answer: B) Can't. 23. You ..... been ill yesterday. I saw you at the bus stop. A) Could have. B) Can't have. C) Must have. D) Should have. Show Answer Correct Answer: B) Can't have. 24. Being a sky-diving instructor ..... be very exciting. A) Can't. B) May/might/could. C) Must. D) None of the above. Show Answer Correct Answer: C) Must. 25. Dave's mother is not from the United States, but she ..... be from Scandinavia. A) Might. B) Can't. C) All the above. D) None of the above. Show Answer Correct Answer: A) Might. 26. He ..... (leave) the country. He hasn't got a passport. A) Must have left. B) Might have left. C) Can't have left. D) None of the above. Show Answer Correct Answer: C) Can't have left. 27. My sister is very angry with her boyfriend. She's not sure, but she thinks he ..... on her, A) Can't have cheated. B) Must have cheated. C) Might have cheated. D) None of the above. Show Answer Correct Answer: C) Might have cheated. 28. Choose the right modal for this sentenceMike ..... be at home, or at the library. I haven't seen him in hours. A) Must. B) Might. C) Can't. D) None of the above. Show Answer Correct Answer: B) Might. 29. No one answers the phone. They ..... be at the club. A) Must. B) Can't. C) All the above. D) None of the above. Show Answer Correct Answer: A) Must. 30. I can't remember what Jason does at university. He could study geography or ..... A) He may not study geology. B) He might study geology. C) He must study geology. D) None of the above. Show Answer Correct Answer: B) He might study geology. 31. That man can't be a doctor A) It's possible that he's a nurse. B) He's wearing a hile coat. C) He doesn't know anything about medicine. D) None of the above. Show Answer Correct Answer: C) He doesn't know anything about medicine. 32. Frank just left home two minutes ago. A) It's so late!!. B) He could be at work yet. C) He can't be at work yet. D) He must be at work yet. Show Answer Correct Answer: C) He can't be at work yet. 33. Lucia must have ..... so happy when she found out she was being promoted. A) Be. B) Is. C) Being. D) Been. Show Answer Correct Answer: D) Been. 34. A:I've lost my keys. B:I think they ..... in the car. A) A. could be. B) B. must be. C) C. can't be. D) None of the above. Show Answer Correct Answer: A) A. could be. 35. He ..... bought a new car. He doesn't have any money. A) Could have. B) Must have. C) Can't have. D) Must be. Show Answer Correct Answer: C) Can't have. 36. She ..... misunderstood my directions. Why else is she late? A) Must has. B) Couldn't have. C) Must have. D) Can't have. Show Answer Correct Answer: C) Must have. 37. You went 130 km in less than an hour? You ..... driven very fast. A) Can't have. B) Could have. C) Must have. D) None of the above. Show Answer Correct Answer: C) Must have. 38. She ..... here. She said she would try to come. A) Must be. B) Might be. C) All the above. D) None of the above. Show Answer Correct Answer: B) Might be. 39. Who has left their laptop in the conference room? It ..... be Mel's-she's working at home today. A) Must. B) Might not. C) Can't. D) Could. Show Answer Correct Answer: C) Can't. 40. Francis ..... my email by now. I sent it last Friday. A) Might read. B) Can't have read. C) Must have read. D) Couldn't have read. Show Answer Correct Answer: C) Must have read. 41. They ..... the news by now. It's all over social media. A) Can't have heard. B) Must have heard. C) Should have heard. D) None of the above. Show Answer Correct Answer: B) Must have heard. 42. The doctor said my headaches ..... be because of the hot weather but they're going to do some tests to be sure. A) Must. B) Could. C) Can't. D) None of the above. Show Answer Correct Answer: B) Could. 43. Jack is not at home. He ..... be at a party, but I don't know. A) Can't have. B) Must. C) May have. D) Might. Show Answer Correct Answer: D) Might. 44. Choose the correct modal verb.That ..... be Verenice in the school. She's on holiday. A) Must. B) Can't. C) Could. D) Might. Show Answer Correct Answer: B) Can't. 45. Ann was in a very difficult situation last year. It can't ..... easy for her. A) Be. B) Have been. C) All the above. D) None of the above. Show Answer Correct Answer: B) Have been. 46. The children ..... have eaten the cookies, they hate that flavour. A) Must. B) Can't. C) Might. D) None of the above. Show Answer Correct Answer: B) Can't. 47. I had to wait 45 minutes for a bus yesterday. There ..... been an accident or maybe a strike. A) Must have. B) Might have. C) May not have. D) Can't have. Show Answer Correct Answer: A) Must have. 48. My passport ..... be in that drawer. I've already looked there three times. A) Can't. B) May not. C) Mustn't. D) None of the above. Show Answer Correct Answer: A) Can't. 49. A:I have missed a call, but I don't recognize this number.B:So it ..... be from anyone you know. A) Must. B) Can't. C) Might. D) None of the above. Show Answer Correct Answer: B) Can't. 50. I'm leaving work now but I ..... be a little late if there's traffic on the road. A) Must not. B) Must. C) Could. D) Can't. Show Answer Correct Answer: C) Could. 51. Sara's very busy. She ..... be able to come tonight. A) Might. B) Can't. C) Must. D) None of the above. Show Answer Correct Answer: B) Can't. 52. I've lost one of my gloves. I ..... it somewhere. (I'm sure!) A) Must have dropped. B) Might have dropped. C) Could drop. D) Can't have dropped. Show Answer Correct Answer: A) Must have dropped. 53. You ..... left it in the office, I suppose. A) Could have. B) Might have. C) I and 2 are both possible. D) Must have. Show Answer Correct Answer: C) I and 2 are both possible. 54. I'm sorry but Samantha isn't here. She ..... already left the office. (100% certain) A) Must have. B) May have. C) Can't have. D) Could have. Show Answer Correct Answer: A) Must have. 55. I'm sure Sam put on weight last year. A) Must have put. B) Could have put. C) May have put. D) Must have putted. Show Answer Correct Answer: A) Must have put. 56. I can't believe Jim hasn't arrived yet. He ..... taken the wrong train. A) Should have. B) Must have. C) Can have. D) None of the above. Show Answer Correct Answer: B) Must have. 57. We use must have + past participle when ..... A) We think it's possible that something happened. B) We feel sure about what happened. C) We think it's not possible that something happened. D) None of the above. Show Answer Correct Answer: B) We feel sure about what happened. 58. You're likely to have an exam later.It refers to the ..... A) Present. B) Past. C) Future. D) None of the above. Show Answer Correct Answer: C) Future. 59. Someone broke into the jewelry store last night, but there's no sign of forced entry.What can the police deduce? A) "The thief must have used a key.". B) "The thief must not have come through the window.". C) "The thief can't have been working alone.". D) "The thief might have forgotten to lock the door.". Show Answer Correct Answer: A) "The thief must have used a key.". 60. He ..... their son. They have only daughters. A) A. might be. B) B. can't be. C) C. mustn't be. D) None of the above. Show Answer Correct Answer: B) B. can't be. Next →Related QuizzesAuxiliary Verbs QuizzesVerbs QuizzesModals Of Deduction Quiz 2Modals Of Deduction Quiz 3Modals Of Deduction Quiz 4Modals Of Deduction Quiz 5Modals Of Deduction Quiz 6Modals Of Deduction Quiz 7Modals Of Deduction Quiz 8Modals Of Deduction Quiz 9 🏠 Back to Homepage 📘 Download PDF Books 📕 Premium PDF Books