– He___ be in the classroom, I think .—No, he ___ be in the classroom. I saw him go home a minute ago.
A: can; may not
B: must; may not
C: may; can't
D: may; mustn't
A: can; may not
B: must; may not
C: may; can't
D: may; mustn't
举一反三
- Mike ______ be in Beijing because I saw him in the classroom only a few minutes ago. A: mustn’t B: can’t C: may not D: might not
- Jack_______ be at home because I saw him in the library just now. A: can’t B: may C: must D: mustn’t
- — I think I saw John yesterday. A: You _____ him, for he is now in the U.S. B: can't see C: can't have seen D: may not see E: must not see
- He ______ be in the classroom because he was seen playing football on the play- ground. A: mustn't B: can't C: may not D: isn't able to
- Peter___be in Paris because I saw him in town only an hour ago. A: mustn’t B: isn’t able to C: can’t D: may not