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

发布时间：2020-08-16 07:21:13


.When she came out, Mary looked a bit tired because she     the house.
A. cleaned
B. was
C. had cleaned
D. had been cleaning

网友回答

A. cleaned
B. was
C. had cleaned
(答案→)D. had been cleaning
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