20.When I try to understand that prevents so many Americans from being as happy as one might expect, it seems to me that there are two causes. A.Why it does B.Why it is C.What it does D.What it is 查看更多

 

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When I try to understand _______ that prevents so many Americans from being as happy as one might expect, it seems to me that there are two causes.?

A. why it does       B. what it does       C. what it is    D. why it is

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When I try to understand _______ that prevents so many Americans from being as happy as one might expect, it seems to me that there are two causes.?

A. why it does       B. what it does       C. what it is    D. why it is

查看答案和解析>>

When I try to understand ____ that prevents so many Americans from being as happy as one might expect, it seems to me that there are two causes.

A.why does itB.what does itC.what it isD.why it is

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When I try to understand ____ that prevents so many Americans from being as happy as one might expect, it seems to me that there are two causes.

A.why does it        B.what does it        C.what it is          D.why it is

 

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      When I try to understand __________that prevents so many Americans from being as happy as one might expect, it seems that there are two causes.

     A. why it does        B. what it does          C. what it is       D. why it is

 

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