I was putting on my shirt ______ my telephone rang.A．whileB．whenC． asD．before_刷题宝

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I was putting on my shirt ______ my telephone rang.

A．while

B．when

C． as

D．before

上一题下一题 0.64难度单项选择更新时间:2014-01-08 10:22:41

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