题目内容

. ---- How long ____ at this job?
---- Since 1990.
A.were you employedB.have you been employed
C.had you been employedD.will you be employed
B
考查时态语态。跟答语从1990年开始可知上文是完成时态,you是雇佣的对象,故用被动语态,选B。
句意:
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