16. You _______ finish your homework now. You can always do it after dinner. 

A. couldn’t B. mustn’t C. don’t have to D. shouldn’t

17. Sam _______ his collection. I can imagine his wife’s anger if he does. 

A. may have to sell B. may have sold

C. could have sold. D. must have sold

18. _______ I post that letter for you on the way to the office?

A. Would B. Will C. Do D. Shall

19. “Shall I tell John about it?” “No, you _______ I’ve told him already. ”

A. needn’t B. wouldn’t C. mustn’t D. shouldn’t

20. “Do you need this paintbrush?” “Ah, yes. _______ it to me, please?”

A. Do you pass B. Will you pass

C. Are you passing D. Are you going to pass

21. You’re going to set up the equipment in a minute. _______ give you a hand?

A. Shall I B. Will I C. Would I D. Do I

22. “ _______ you hand that book, please?” “Sure. Here it is. ”

A. Would B. Should C. Must D. May

23. “Are these gloves necessary?” “Yes. You _______ use this chemical without gloves. It will burn your skin. ”

A. must not B. don’t have to C. could not D. need not

24. You _______ so fast, or you might have an accident. 

A. don’t have to drive B. shouldn’t have driven

C. had better not drive D. mustn’t have driven

25. When you have a small child in the house, you _______ leave small objects lying around. Such objects _______ be swallowed, causing serious injury or even death. 

A. needn’t - may B. should not - might C. should - must D. mustn’t - can’t

26. Yesterday I ________ finish my geography project.

A. must B. mustn’t C. have to D. had to

27. All employees ________ be late for work.

A. must B. mustn’t C. have to D. don’t have to

28. If you are under 13, you ________ get your parents' permission.

A. must B. mustn’t C. don’t have to D. have to

29. We ________ forget to keep the vegetables in the fridge or else they’ll be rotten.

A. mustn’t B. must C. have to D. don’t have to

30. Bicyclists ________ remember to signal when they turn.

A. must B. mustn’t C. don’t have to D. had to
Giúp mik vs ạ