问题描述:
The little boy______ asleep before his mother ________ the story.
A.fell ,finished B.had fallen ,finished C fell,had finished D.had fallen,had finished 是不是应该选B 过去完成时
A.fell ,finished B.had fallen ,finished C fell,had finished D.had fallen,had finished 是不是应该选B 过去完成时
问题解答:
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