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My aunt has worked in a clinic 2008.A.afterB.beforeC.tillD.since

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My aunt has worked in a clinic 2008.A.afterB.beforeC.tillD.since

My aunt has worked in a clinic ______2008.

A.after

B.before

C.till

D.since

试题答案

D

根据前面用现在完成时态,所以这里用since。