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英语
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has sam finidhed his homework today?I have no idea.He ----it this morning .a did Bhas done C was done 一定说了理由
人气：177 ℃ 时间：2019-11-14 01:49:06
解答
选择A,因为this morning是一般过去时的时间状语,所以选用do的过去式did.
这句话的意思是说sam今天的
作业
完成了吗?-我不知道.他今天早上做的.
所以这件事是发生在过去的,陈述过去一般事实.
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