(2013·高考陕西卷)I have heard a lot of good things about you I came back from abroad.
A. since
B. until
C. before
D. when
网友回答
(答案→)A. since
B. until
C. before
D. when
解析：选A。从题干中的“have heard”可知是“已经听说”，所以应该是“自从我回来”，因此要用since引导时间状语从句。题干的意思是：“自从我从国外回来，我听到了很多关于你的好消息。”