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i can't lend you the book.i __ (promise) it to Lily.填啥

分类: 作业答案 • 2022-01-09 18:05:27

问题描述：

i can't lend you the book.i __ (promise) it to Lily.填啥

答

强调过去完成的动作用完成时,故填have promised