题目内容
【题目】—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
【答案】B
【解析】since用于现在完成时,特殊疑问词后加一般疑问句,故选B。

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题目内容
【题目】—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
【答案】B
【解析】since用于现在完成时,特殊疑问词后加一般疑问句,故选B。