I was doing my homework _______ mother was cooking._刷题宝

题干

I was doing my homework _______ mother was cooking.

A：when

B：while

C：as

D：what time

上一题下一题 0.0难度选择题更新时间:2012-11-26 07:11:49

答案(点此获取答案解析）

B

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