Look! What a mess the room is! In my opinion it needs .A. cleaning upB. being cleaned up

问题补充：

Look! What a mess the room is! In my opinion, it needs .

A. cleaning up

B. being cleaned up

C. to clean up

D. clean up

答案：

(答案→)A. cleaning up

B. being cleaned up

C. to clean up

D. clean up

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