问题描述：
No matter how frequently _____,the work of Beethoven still attract people all over the world.
A.being performed B.performing C.to be performed D.performed
这道题为什么要选D,选A不能理解通吗?
A.being performed B.performing C.to be performed D.performed
这道题为什么要选D,选A不能理解通吗?
问题解答：
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