题目内容：

The work has lived here for twenty years_____ A,since twenty years ago B.since he came here
C.twenty years ago D.twenty years before
为啥啊

优质解答

BA,since twenty years ago （错误的表达方法~没有since 和ago连用的）B.since he came here （对滴）C.twenty years ago （ago 和过去时连用不和完成时连用）D.twenty years before （这个是和间接转语也就是转述别...