—Look！Somebody ________ the sofa.
—Well，it wasn't me.I didn't do it.(2012·江西)
A．is cleaningB．was cleaning
C．has cleanedD．had cleaned
C
考查時(shí)態(tài)。句意：——瞧，有人擦過沙發(fā)了�！叮皇俏�，我沒有擦過沙發(fā)。根據(jù)語境可知，空處表示有人已經(jīng)做過某事了，故用現(xiàn)在完成時(shí)。
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