34. The space is left to let the rail expand when it gets hot, ______?A．isn’t it

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34. The space is left to let the rail expand when it gets hot, ______?

A．isn’t it

B．is it

C．doesn’t it

D．does it

答案

解析

略

举一反三

15. Not until father came in ______ to prepare my lessons.

A．I began

B．did I begin

C．I had begun

D．had I begun

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17..In the United States, bus travel doesn"t cost much as train travel, 　　?
18.

A．don"t they 　

B．does it

C．do they 　　

D．doesn"t it

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21.—It is raining cats and dogs.
22.　—　　　..
23.

A．So it is　　

B．So is it

C．Neither it is

D．Neither is it

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19.—My home is in that tall building over there.
　—　　　　　 ?

A．Can it see

B．Can see it

C．Can be seen it

D．Can it be seen

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22.—Boy, ____________
　—It is, looks like spring is coming soon.
　—Yeh, It"ll just be a few more weeks.

A．it"s really a nice day today, isn"t it?

B．what knid of weather are we going to have today?

C．do you think it is going to rain today?

D．what" it like outside today?

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