There's no light on they ______ be at home.
A: can't
B: mustn't
C: needn't
D: shouldn't
A: can't
B: mustn't
C: needn't
D: shouldn't
举一反三
- Mary _______ be at home. I saw her in the library just now. A: mustn’t B: needn’t C: shouldn’t D: can’t
- —MustIfinishmyhomeworknow?<br/>—No,you______.Youcangohomenow. A: needn’t B: mustn’t C: shouldn’t D: can’t
- Must I hand in all my money, Mum? A: mustn't B: can't C: needn't D: shouldn't
- Must I hand in the paper right now No, you ______ A: mustn't B: needn't C: can't D: shouldn't
- She（）have missed the first bus, or she（）be here so early. A: needn't, shouldn't B: couldn't can't C: shouldn't, mayn't D: mustn't, wouldn't