Mary _______ be at home. I saw her in the library just now.
A: mustn’t
B: needn’t
C: shouldn’t
D: can’t
A: mustn’t
B: needn’t
C: shouldn’t
D: can’t
举一反三
- Jack_______ be at home because I saw him in the library just now. A: can’t B: may C: must D: mustn’t
- There's no light on they ______ be at home. A: can't B: mustn't C: needn't D: shouldn't
- She ______ be iii because I saw her playing tennis just now. A: can't B: couldn't C: mustn't D: may not
- Must I hand in the paper right now No, you ______ A: mustn't B: needn't C: can't D: shouldn't
- — I cannot find Tom anywhere.— He _________ have been off long. I heard him make a call just now. A: shouldn't B: can't C: mustn't D: needn't