---- How long at this job?
---- Since 1990.
A. were you employed
B. have you been employed
C. had you been employed
D. will you be employed
网友回答
A. were you employed
(答案→)B. have you been employed
C. had you been employed
D. will you be employed
解析：考查时态：因为时间是since1990，所以用现在完成时，而且你是被雇佣，所以用现在完成时的被动式，句意是;--你受雇于这个工作多久了？--自从1990年。选B。