While I was talking on the phone ,my sister _____ (take) a shower in the bathroom.
题目
While I was talking on the phone ,my sister _____ (take) a shower in the bathroom.
这里应填 took 但是为什么不能填 was tooking 将两个动作做对比呢?
答案
应该埴was taking
过去进行时 前面用was,后面用动词的现在分词形式
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