( ) last week ,my father had worked in the factory for ten years

题目

( ) last week ,my father had worked in the factory for ten years
A.Since the end of B.By the end of C.At the end of D.In the end of

答案

选B
后面用过去完成时（had worked）,所以前面的时间用by the end of
by the end of (到……时)+“过去时间”,用于过去完成时.