The police must have caught the thief, _____?
A: mustn't they
B: havn't they
C: didn't they
D: don't they
A: mustn't they
B: havn't they
C: didn't they
D: don't they
举一反三
- It must have rained last night,（）? A: didn’t it B: needn’t it C: mustn’t it D: hasn’t it
- It must have rained last night, ______ it A: mustn' t B: can' t C: didn' t D: needn' t
- It must have rained yesterday evening, _____ it? A: mustn’t B: needn’t C: didn’t D: hasn’t
- I think it must have rained,__________？ A: don’t B: didn ’t C: hasn ’t it D: didn ’t it
- You smoke in class. A: don't have to B: must C: have to D: mustn't