帮我做个选择题:I came to changsha in 1999( )I have been engaged in this work

问题描述:

帮我做个选择题:I came to changsha in 1999( )I have been engaged in this work
A.when B.during which C.since then D.since when
注明解法

A吧,我是这么翻译的 我1999年来到长沙,可是当时我已经从事这份工作了