Hi,Mike!Nice to meet you here.I _____ you joined the club.A.didn't know.B.haven't known.为什么

分类: 作业答案 • 2021-12-19 16:24:01

问题描述：

Hi,Mike!Nice to meet you here.I _____ you joined the club.A.didn't know.B.haven't known.
为什么

答

A

百度嫌我字数不够

答

选择A.didn't know.,因为你现在已经知道了,所以不能用完成时