Many students stopped to listen to the music as it so charmingly on the piano that it att

问题补充：

Many students stopped to listen to the music as it so charmingly on the piano that it

attracted nearly everyone passing by.

A. played

B. had played

C. was playing

D. was played

答案：

A. played

B. had played

C. was playing

(答案→)D. was played

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