No matter how frequently , the works of Beethoven still attract people all overthe world.
A. performed
B. performing
C. to be performed
D. being performed
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(答案→)A. performed
B. performing
C. to be performed
D. being performed
解析：考查分词用法。The works与perform构成被动关系，使用使用过去分词做状语。C表示将要被表演；D项表示正在被表演。句意：无论贝多芬的作品被多么频繁的表演，他们仍然吸引来自全世界的人。