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When I try to understand that prevent so many Americans from being as happy as o

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When I try to understand that prevent so many Americans from being as happy as o

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

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A．why it doesB．what it doesC．what it isD．why it is

试题答案

答案：C

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标签：fromamericansmanybeingone

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