This quiz works best with JavaScript enabled. Home > Grammar > Parts Of Speech > Verbs > Auxiliary Verbs > Modal Verbs > Modals Of Deduction – Quiz 21 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Modals Of Deduction Quiz 21 (25 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. ..... + base form of a verb is used when ..... something is true A) Might / it is possible. B) Must / believe. C) Can't / isn't true. D) None of the above. Show Answer Correct Answer: B) Must / believe. 2. She ..... be at home, the lights are on. A) Must. B) Can't. C) Might. D) None of the above. Show Answer Correct Answer: A) Must. 3. I heard a noise, there ..... be a cat on the roof.I'm not sure, I'm going to check ..... A) Must. B) Can't. C) Might. D) None of the above. Show Answer Correct Answer: C) Might. 4. I've already finished all my work, so I ..... study tonight. I think I'll read for a while. A) Don't have to. B) Have to. C) Must. D) Mustn't. Show Answer Correct Answer: A) Don't have to. 5. You ..... be tired. You've just woken up and you slept about 10 hours. A) Mustn't. B) Can't. C) Mightn't. D) None of the above. Show Answer Correct Answer: B) Can't. 6. To give the promotion to Harold was silly. He ..... (know) much about this company after only a year working here. No wonder our sales are down! A) Couldn't have know. B) Couldn't have known. C) Could have known. D) Could had known. Show Answer Correct Answer: B) Couldn't have known. 7. I don't know why he hasn't called me back. He ..... A) Must have forgotten my number. B) Might forget my number. C) Might have forgotten my number. D) None of the above. Show Answer Correct Answer: C) Might have forgotten my number. 8. Oh, no! My car ..... (refuses to) start. A) Doesn't. B) Won't. C) Shan't. D) Couldn't. Show Answer Correct Answer: B) Won't. 9. They might be at the restaurant.2. I'm sure they're at the restaurant. A) Same meaning. B) Different meaning. C) All the above. D) None of the above. Show Answer Correct Answer: B) Different meaning. 10. A:The Great Wall of China took around 2500 years to build. B:Thousands of people ..... in the construction. A:Yes indeed millions. A) Must have worked. B) Might have worked. C) Mustn't have worked. D) Cant have worked. Show Answer Correct Answer: A) Must have worked. 11. F he drives a jaguar, he ..... be rich A) Must. B) Can't. C) Might not. D) None of the above. Show Answer Correct Answer: A) Must. 12. She went for a long walk, ..... the fact that it was cold A) IN SPITE OF. B) DESPITE. C) EVEN. D) None of the above. Show Answer Correct Answer: B) DESPITE. 13. What is the modal that demonstrate the person isn't completely sure? A) Must have. B) Could have. C) Should have. D) None of the above. Show Answer Correct Answer: B) Could have. 14. He ..... known about it when I saw him. I'm sure he would have told me. A) Must have. B) Might have. C) Can't have. D) None of the above. Show Answer Correct Answer: C) Can't have. 15. Congratulations on passing your exam! You ..... very pleased! (I'm sure!) A) Can't be. B) Must be. C) Might be. D) None of the above. Show Answer Correct Answer: B) Must be. 16. Margot told her mother that she liked her haircut, but she had a strange expression on her face when she said it. A) She might have told a white lie. B) She may not have said she liked it. C) She could tell the truth. D) None of the above. Show Answer Correct Answer: A) She might have told a white lie. 17. Betty said she was hungry, but she didn't eat very much after all. She ..... A) Couldn't have liked the food. B) Couldn't like the food. C) Couldn't have been hungry. D) None of the above. Show Answer Correct Answer: A) Couldn't have liked the food. 18. MUST is used to say that we're sure of something is possible to happen or to be true. A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: A) True. 19. Sara has lost the hearing in her left ear. A) She may have listened to her music too loud. B) She couldn't have listened to her music too loud. C) She has listened to her music too loud. D) None of the above. Show Answer Correct Answer: A) She may have listened to her music too loud. 20. I don't know why Vivian didn't attend the meeting this afternoon. She ..... A) May have been too busy. B) Must have been too busy. C) Might not have been too busy. D) None of the above. Show Answer Correct Answer: A) May have been too busy. 21. She ..... cleaned the whole house on her own in two hours. She must have had some help. A) Must have. B) Might have. C) Can't have. D) None of the above. Show Answer Correct Answer: C) Can't have. 22. If you are asked to dinner at someone's house, you ..... take a gift; it ..... be anything expensive-flowers or pastries are a good idea. A) Mustn't / has to. B) Might not / may. C) Ought to / needn't. D) Need / mustn't. Show Answer Correct Answer: C) Ought to / needn't. 23. 'I'm starving! What's for dinner, Mum?" Fish." I hate fish! I'm not eating it." You ..... be very hungry, then.' A) Couldn't. B) Can't. C) Mustn't. D) Might. Show Answer Correct Answer: B) Can't. 24. This ..... be a good topic, but we'll have to check with the teacher to make sure. A) Must. B) Could. C) All the above. D) None of the above. Show Answer Correct Answer: B) Could. 25. Tim ..... feel awful. He studied really hard, but he still failed the test. A) Can't. B) Must. C) All the above. D) None of the above. Show Answer Correct Answer: B) Must. ← PreviousNext →Related QuizzesAuxiliary Verbs QuizzesVerbs QuizzesModals Of Deduction Quiz 1Modals 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 8 🏠 Back to Homepage 📘 Download PDF Books 📕 Premium PDF Books