-Mr Wu must have been to your house yesterday morning.-No,he___.B_英语解答

-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？

人气：407 ℃　时间：2020-04-15 07:42:35

解答

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.