问题补充:
Peter at this job since he graduated from college.
A. is employed
B. was employed
C. has been employed
D. had been employed
答案:
A. is employed
B. was employed
(答案→)C. has been employed
D. had been employed
解析:句意:自从大学毕业Peter一直受雇于这个工作。根据since he graduated from college.可知用现在完成时,而且Peter和employ是被动关系,用现在进行时的被动,所以选C。