31．Every solid object______reflect a sound，varying according to the size and nat

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31．Every solid object______reflect a sound，varying according to the size and nature of the object．

A．must

B．shall

C．will

D．Should

答案

解析

略

举一反三

27．Don’t you think it essential that every resident of Nanjing___________spare no effort to make contributions to Nanjing 2014 Youth Olympic Games?

A．should

B．will

C．shall

D．Would

题型：不详难度：| 查看答案

Mum, please let us, Mary and me, go to Jack’s birthday party tomorrow, ______?

A．can you

B．will you

C．shall we

D．may we

题型：不详难度：| 查看答案

Oh, it’s so cool in the house. You _______ have turned on the air-conditioner, haven’t you?

A． should

B．might

C．must

D．can

题型：不详难度：| 查看答案

24. ---Is there any flight to New York?
--- I think there ______ be, for it is snowing so heavily.

A．shouldn’t

B．mustn’t

C．can’t

D．needn’t

题型：不详难度：| 查看答案

--- What does the notice on the wall say?
--- ‘No person take books out of the reading room; otherwise he would be fined.’

A．will

B．may

C．shall

D．Must

题型：不详难度：| 查看答案