-- I’m exhausted. I _____ on a project day and night.
-- You’d better have several days off after finishing it. Otherwise you might break down.
A.workedB.have worked
C.workD.have been working
D

試題分析:考查時態(tài):句意:--我很累,我整天都在忙著這個計劃。-結(jié)束后你最好休息幾天,否則你會垮掉的。說明做這個項目是從過去到現(xiàn)在說話的時候一直進(jìn)行的,有可能還要繼續(xù),用現(xiàn)在完成進(jìn)行時,A是一般過去式,表示純粹的過去的動作,B是現(xiàn)在完成時,表示過去的動作對現(xiàn)在的影響,C是一般現(xiàn)在時,表示一貫的行為,所以選D。
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