－Haveyoubeenacquaintedwitheachotherforlong?－Notverylong...

問題詳情：

－Have you been acquainted with each other for long?

－Not very long, ____________ we started to work in the company.

A. after             B. before           C. when                 D. since

【回答】

D

知識點：連詞

題型：選擇題