—Let's go to the library by bus.
A: need't
B: can't
C: mustn't
D: shouldn't
A: need't
B: can't
C: mustn't
D: shouldn't
举一反三
- —Let's go to the library by bus.—It's not far. We ______ take a bus. A: need't B: can't C: mustn't D: shouldn't
- There's no light on they ______ be at home. A: can't B: mustn't C: needn'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
- ---Must we take all the books back to the library?No, you____ A: mustn't B: needn't C: can't D: shouldn’t
- Mary _______ be at home. I saw her in the library just now. A: mustn’t B: needn’t C: shouldn’t D: can’t