I wonder why I can"t work out the problem _____ they can. [ ]A. when B. as C

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I wonder why I can"t work out the problem _____ they can. [ ]
A. when
B. as
C. though
D. while

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举一反三

— After the 2008 Olympic Games, more and more people in western countries begin to learn Chinese _____
they can better understand the culture of China.
— I"m sure they will. [ ]
A. because of
B. even though
C. so that
D. as if

题型：江苏模拟题难度：| 查看答案

Nancy hasn"t begun working on her P.H.D, _____ working on her master"s. [ ]
A. still because she is yet
B. yet as a result she is still
C. yet because she is still
D. still while she is already

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I"ll give you a lift ____ I get home ____ you set off. [ ]
A. before, if
B. after, as
C. if, before
D. until, before

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— Larry is often absent from school, isn"t he?
— Yes. That"s ____ he is in bad health. [ ]
A. why
B. the reason
C. because
D. how

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It seemed only seconds ____ the big fire broke out. [ ]
A. when
B. till
C. after
D. before

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