( ) 5.---- How long _________ at the job?---- Since 1990.A.were you employed B.have you been employedC.had you been employed D.will you been employed

( ) 5.---- How long _________ at the job?---- Since 1990.A.were you employed B.have you been employedC.had you been employed D.will you been employed
( ) 5.---- How long _________ at the job?---- Since 1990.
A.were you employed B.have you been employed
C.had you been employed D.will you been employed

( ) 5.---- How long _________ at the job?---- Since 1990.A.were you employed B.have you been employedC.had you been employed D.will you been employed
B
how long 提问 since、 for回答的基本都是现在完成时
由回答看出是现在完成时

B
since1990发生持续到现在，用现在完成时

不v超过

B表示现在完成时，C表示过去完成时，而since 1990表示该动作一直持续到现在。所以选B