题目内容
-Has Tommy finished his homework yet??
-I have no idea； he ____ it this morning.
A. was doing B. had been doing C. has done D. did
A
解析:
表示今天上午一直在做作业。
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导学全程练创优训练系列答案题目内容
-Has Tommy finished his homework yet??
-I have no idea； he ____ it this morning.
A. was doing B. had been doing C. has done D. did
A
表示今天上午一直在做作业。
导学全程练创优训练系列答案