I have heard a lot of good things about you( )II have heard a lot of good things about you( )I came back from abroad.答案是since ,为什么不用before?

分类: 作业答案 • 2022-04-23 21:00:48

问题描述：

I have heard a lot of good things about you( )I
I have heard a lot of good things about you( )I came back from abroad.
答案是since ,为什么不用before?

答