19. Harry has been reading all day -he ______ be tired.
A. should B. has got to C. has to D. must
18. Our teacher demanded our report ________ before five.
A. must be handed in B. be handed in
C. should hand in D. need be handed in
17. ---Catherine, I have cleaned the room for you.
---Thanks. You_____ it. I could manage it myself.
A. needn’t do B. needn’t have done C. mustn’t do D. shouldn’t have done
16.-Where is my cell phone? I can find it nowhere.
-You it stolen while on the bus.
A. must have B. should have had
C. may have had D. can have
15. She suffered a mental disease for quite some time and in the end she _____ go into a mental hospital.
A. had to B. must C. would like to D. could
14. - Finally I got to my grandmother’s home on foot.
- Really? You _______ a ride there.
A. must have taken B. could have taken
C. shouldn’t have taken D. couldn’t have taken
13. Since you have come so far with your experiment,you carry it through to the end.
A. may B. might C. may well D. may as well
12. – Lucy doesn’t mind lending you her dictionary.
-- She ______ . I've already borrowed one.
A. can't B. mustn't C. needn't D. shouldn't
11. Jack’s ill, so they ______ change their plans.
A. must B. should C. have got to D. ought to
10. Excuse me, six, Mr. White has arrived. he wait outside or just come in ?
A. Shall B. May C. Could D. Must
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