17．---May I surf the Internet tonight? --- No, you ______．You must do the exerci

题型：不详难度：来源：

17．---May I surf the Internet tonight?
--- No, you ______．You must do the exercises．

A．needn’t

B．won’t

C．mustn’t

D．don’t

答案

解析

略

举一反三

20．---I got up at five this morning, I thought it was Friday．
---You _____ so early．It is Sunday today; you don’t have to go to work．

A．mustn’t have got up	B．needn’t have got up
C．needn’t get up	D．mustn’t get up

题型：不详难度：| 查看答案

28．—You must be tired after the flight. You’d better take a good rest.
—Yes, I _________. Thank you.

A．will

B．should

C．may

D．Would

题型：不详难度：| 查看答案

-- I think we"ll give Bob a ring.
-- We ______ . We have been out of touch with him for ages.

A．will

B．may

C．have to

D．ought to

题型：不详难度：| 查看答案

-- Do you think Allan came by taxi?
-- No. If he had, I don"t believe he ______ his bike here.

A．would leave

B．left

C．would have left

D．had left

题型：不详难度：| 查看答案

29. A big earthquake hit Yushu, Qinghai province in the early morning, and if a little later, many more people _______.

A．could survive	B．might have survived
C．must have survived	D．should survive

题型：不详难度：| 查看答案