Since the global economic crisis took place,many people ( )their jobs.

问题描述:

Since the global economic crisis took place,many people ( )their jobs.
A.lost B.are losing C.have lost D.will lose

C
since,意为由.起(至今),后面的句子表示一个时间点,所以since引导的状语从句表示的是一段时间,相应主句中的谓语使用完成时态.