I was just at the school gate the bell rang.A．whileB．becauseC．ifD．when_刷题宝

题干

I was just at the school gate the bell rang.

A．while

B．because

C．if

D．when

上一题下一题 0.64难度单项选择更新时间:2013-10-23 03:55:20

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