--Have you known each other for long?--Not very long,_____we started to work in this company.A.sinceB.beforeC.whenD.after

熱心網友

：--Have you known each other for long? --Not very long,_____we started to work in this company. A.since B.before C.when D.after該句是省略回答，將所省略部分補出，答案就容易看出是考現在完成時和段時間連用：It's not very long,(we have just known each other)since we started to work in this company.所以選a,即從在這家公司工作到現在，b,c,d,選項沒有這種用法。

熱心網友

選a since 自從。。。