29．—The cleaning must have taken you quite a long time yesterday．
—Right．The rooms for two months．
A. haven't been cleaned
B. didn't clean
C. hadn't been cleaned
D. hadn't cleaned
网友回答
A. haven't been cleaned
B. didn't clean
(答案→)C. hadn't been cleaned
D. hadn't cleaned
解析：可联系答.案.网客服索取。