.When she came out, Mary looked a bit tired because she _____the house.A.cleanedB.wasC.had cleanedD.

题目简介

.When she came out, Mary looked a bit tired because she _____the house.A.cleanedB.wasC.had cleanedD.

题目详情


.When she came out, Mary looked a bit tired because she _____the house.
A.cleanedB.wasC.had cleanedD.had been cleaning
题型:单选题难度:偏易来源:不详

答案

D

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