问题
选择题
His father has worked in this factory _____ he came here in 1980.
A. since B. for C. when
答案
答案：A
题目分析：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。
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His father has worked in this factory _____ he came here in 1980.
A. since B. for C. when
答案：A
题目分析：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。