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I don’t doubt our country will play a more and more important role in the world affairs. A. that B. if C. whether D. how 【查看更多】

 

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I don’t doubt ___ our country will play a more and more important role in the world affairs.

A. that              B. if                    C. whether       D. how

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I don't doubt ________ our country will play a more and more important role in the world affairs．

[　　]

A．that

B．if

C．whether

D．how

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