摘要： -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 [解析] since后可加过去时间.也可加从句.从句中要用一般过去式.而主句要用现在完成式.根据Since 1990可确定为现在完成时.答案为B.
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— 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
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--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
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---- 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
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