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8. (单选题) ( ) One day, the man upstairs heard the _______ of children _______ in the park.(本题4.0分)
A、 noise; to play
B、 sound; to play
C、 noise; play
D、 sound; playing
A、 noise; to play
B、 sound; to play
C、 noise; play
D、 sound; playing
参考答案