-Mr Wu must have been to your house yesterday morning.-No,he___.Because he didn't know my address.could't?can't?哪个？

分类: 作业答案 • 2021-12-19 17:10:22

问题描述：

-Mr Wu must have been to your house yesterday morning.-No,he___.Because he didn't know my address.
could't?can't?哪个？

答

could't根据前文提到的yesterday知道时态是过去时,还可以根据后面的回答didn'判断出时态是过去时.因此用could not.