( ) 11. The boy said he had to speak English in class, but he ______ speak it after calss.

　　A. could B. didn’t have to C. might D. shouldn’t

　　( ) 12. –Must we hand in the papers now? --No, you ______.

　　A. can’t B. may not C. mustn’t D. needn’t

　　( ) 13. John ______ go there with us tonight, but he isn’t very sure about it.

　　A. must B. can C. will D. may

　　( ) 14. Even the top students in our class can’t work out this problem. So it

　　______ be very difficult.

　　A. can B. may C. must D. need

　　( ) 15. Put on more clothes. You ______ be feeling cold with only a shirt on.

　　A. can B. could C. would D. must

　　( ) 16. It’s still early. You ______.

　　A. mustn’t hurry B. wouldn’t hurry

　　C. may not hurry D. don’t have to hurry

　　( ) 17. –May I stop here? --No, you ______.

　　A. mustn’t B. might not C. needn’t D. won’t

　　( ) 18. A computer ______ think for itself, it must be told what to do.

　　A. can’t B. couldn’t C. may not D. might not

　　( ) 19. –Could I borrow your dictionary? -- Yes, of course you _______.

　　A. might B. will C. can D. should

　　( ) 20. Peter ______ come with us tonight, but he isn’t very sure yet.

　　A. must B. may C. can D. will