He ______ possibly be serious, and nobody takes it seriously.
A: shouldn’t
B: can’t
C: mustn’t
D: shan’t
A: shouldn’t
B: can’t
C: mustn’t
D: shan’t
举一反三
- He ____ more than thirty. A: mustn’t be B: shouldn’t be C: won’t be D: can’t be
- Johnny, you play with the knife; you hurt yourself A: won't; can't B: can't; shouldn't C: shouldn't; must D: mustn't; may
- Johnny, you________ play with the knife, you________ hurt yourself. A: won’t; can’t B: mustn’t; may C: shouldn’t; must D: can’t; shouldn’t
- There's no light on they ______ be at home. A: can't B: mustn't C: needn't D: shouldn't
- —MustIfinishmyhomeworknow?<br/>—No,you______.Youcangohomenow. A: needn’t B: mustn’t C: shouldn’t D: can’t