I ---all my homework by the time you --back A will have fini

问题描述:

I ---all my homework by the time you --back A will have finished ;come B will finish;come C will h
1个回答 分类:英语 2014-09-26

问题解答:

我来补答
A
看到by结构的时间状语,就应该用完成时
 
 
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