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 |
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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 |
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