单选题：When I try to understand_______that prevents so many Americ

题目内容：
When I try to understand_______that prevents so many Americans from being SO 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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“What did the teacher say to you just now?”“She asked me___

“What did the teacher say to you just now?”“She asked me________．”A．whether I h

分类：成人英语三级  题型：单选题
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I cannot find my umbrella．I must have________ it on the bus．

I cannot find my umbrella．I must have________ it on the bus． A．lost B．forgotten

分类：成人英语三级  题型：单选题
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To relax himself before sleep，the writer often________．

To relax himself before sleep，the writer often________． A．makes a bed B．gets int

分类：成人英语三级  题型：单选题
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________forget the days when we lived in the countryside．

________forget the days when we lived in the countryside．A．Never I shall B．Neve

分类：成人英语三级  题型：单选题
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His wife is constantly finding________with him，which makes h

His wife is constantly finding________with him，which makes him very angry.A．erro

分类：成人英语三级  题型：单选题
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