My father has worked there .
A. since five years
B. since 1990
C. for five years ago
D. five years
网友回答
A. since five years
(答案→)B. since 1990
C. for five years ago
D. five years
解析：一般能和现在完成时连用的时间状语为since+一段时间 ago 或for+一段时间，或since+一般过去时态的句子，或since+过去时间，故选B，符合题意。