A person ______ be a millionaire to be able to live a happy life.
A: have to
B: doesn't have to
C: must
D: mustn't
A: have to
B: doesn't have to
C: must
D: mustn't
举一反三
- 7. A person _______ be a millionaire to be able to live a happy life.
- He must have lived a happy life a few years ago, ____he? A: didn’t B: hasn’t C: mustn’t D: can’t
- That must have made you feel happy, ________? A: didn't it B: mustn't it C: haven't it D: hadn't it
- You smoke in class. A: don't have to B: must C: have to D: mustn't
- Where ________ Mary have put the empty bottles? -She ________ them away. They must be somewhere. A: can; can't have thrown B: must; needn't C: must; must have thrown D: can; mustn't have thrown