We have been good friends ( ) we joined the same pingpong team.A afterB beforeC sinceD until说一下为什么

分类: 作业答案 • 2021-12-19 17:08:34

问题描述：

We have been good friends ( ) we joined the same pingpong team.
A after
B before
C since
D until
说一下为什么

答