They will never succeed, _____ hard they try.A．becauseB．howeverC．whenD．since

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They will never succeed, _____ hard they try.

A．because

B．however

C．when

D．since

答案

解析

略

举一反三

_____ still half drunk, he made his way home.

A．When

B．Because

C．Though

D．As

题型：不详难度：| 查看答案

_____ she was very tired, she went on working.

A．As

B．Although

C．Even

D．In spite of

题型：不详难度：| 查看答案

Busy _____ he was, he tried his best to help you.

A．as

B．when

C．since

D．for

题型：不详难度：| 查看答案

I learned a little Russian _____ I was at middle school.

A．though

B．although

C．as if

D．when

题型：不详难度：| 查看答案

_____ we got to the station, the train had left already.

A．If

B．Unless

C．Since

D．When

题型：不详难度：| 查看答案

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