29．—The cleaning must have taken you quite a long time yesterday． —Right．The rooms for tw

问题补充：

29．—The cleaning must have taken you quite a long time yesterday．

—Right．The rooms for two months．

A. haven been cleaned

B. didn clean

C. hadn been cleaned

D. hadn cleaned

答案：

A. haven been cleaned

B. didn clean

(答案→)C. hadn been cleaned

D. hadn cleaned

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