——I    cleaning my bedroom. It’s clean now.
——Wow.When    you    it?
A．have finished，did，finishB．finished，have，finished
C．finish，do，finishD．have finished，have，finished
A
考查情景交際和時(shí)態(tài)�！拔乙呀�(jīng)打掃完臥室了�，F(xiàn)在臥室干凈了。”“哇。你是什么時(shí)候打掃的？”發(fā)生在過去的動(dòng)作，對(duì)現(xiàn)在造成影響，用現(xiàn)在完成時(shí)。When引導(dǎo)的是時(shí)間狀語(yǔ)從句，問的是“何時(shí)打掃的”，應(yīng)該用一般過去時(shí)。故選A。
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