His father has worked in this factory _____ he came here in 1980.A. since       

题型：不详难度：来源：

His father has worked in this factory _____ he came here in 1980.
A. since        B.  for        C.  when

答案

A

解析

试题分析：since由于，自从……以来；for为了，对于；when当……时。句意：自从他1980年到这儿以来，他的父亲就在这家工厂工作。故选A。