I don"t know 　　　　　　makes her afraid of having her business discussed.A．what it i

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I don"t know 　　　　　　makes her afraid of having her business discussed.

A．what it is about Mary that	B．that is it abut Mary what
C．what is it about Mary that	D．that is about Mary what

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举一反三

I don"t think 　　　　　　　　difficult for a Chinese student to master a foreign language within five years

A．that　　　

B．it　　　

C．too　　　

D．very

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　　　　　　you met the Englishman?

A．Where it was that　　　

B．Who it was that

C．Where was it that

D．Where was that

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　　　　　　that she has gone to the United States?

A．Was it true　　　

B．Is it true

C．It is true

D．It was true

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　　　　　　certain that his invention will lead to the development of production.

A．That"s　　　

B．This is　　　

C．It"s　　　

D．What"s

题型：不详难度：| 查看答案

　　　　　　in 1914 　　　　　　the First World War broke out?

A．Was that, that　　　

B．Was that, when

C．Was it. that

D．Was it, when

题型：不详难度：| 查看答案