The reason for his success is ______ he worked very hard.A．whyB．thatC．becauseD．f_刷题宝

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The reason for his success is ______ he worked very hard.

A．why	B．that
C．because	D．for

上一题下一题 0.64难度单项选择更新时间:2016-09-12 06:16:22

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