This quiz works best with JavaScript enabled. Home > English Grammar > Grammar > Parts Of Speech > Verbs > Auxiliary Verbs > Modal Verbs > Modal Verb – Quiz 21 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Modal Verb Quiz 21 (2 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. Mark ..... play tennis when he was 6. A) Could. B) Have to. C) Must. D) Can. Show Answer Correct Answer: A) Could. 2. Listen carefully! You ..... leave the room until I say so. A) Musn't. B) Can. C) May. D) Don't have to. Show Answer Correct Answer: A) Musn't. ← PreviousRelated QuizzesAuxiliary Verbs QuizzesVerbs QuizzesModal Verb Quiz 1Modal Verb Quiz 2Modal Verb Quiz 3Modal Verb Quiz 4Modal Verb Quiz 5Modal Verb Quiz 6Modal Verb Quiz 7Modal Verb Quiz 8 🏠 Back to Homepage 📘 Download PDF Books 📕 Premium PDF Books