He_____ upstairs because I saw him playing football on the playground just now.
A: mustn’t be
B: might not be
C: can’t be
D: should not be
A: mustn’t be
B: might not be
C: can’t be
D: should not be
举一反三
- She ______ be iii because I saw her playing tennis just now. A: can't B: couldn't C: mustn't D: may not
- Jack_______ be at home because I saw him in the library just now. A: can’t B: may C: must D: mustn’t
- He ______ be playing football now because he is in hospital. A: can’t B: mustn’t C: don’t D: didn’t
- He____________.I saw him playing football on the playground just now. A: must have fallen ill B: may have fallen ill C: can't have fallen ill D: should have fallen ill
- He________be in the library because I saw him on the playground just now.