No matter how frequently _______, the works of Beethoven still attract people all over the world.
A. performed B. performing c. to be performed D. being performed
No matter how frequently _______, the works of Beethoven still attract people all over the world.
A. performed B. performing c. to be performed D. being performed
A
动词perform跟它的逻辑主语the works of Beethoven的关系是被动关系，frequently（经常）明确它的状态是一般式，因此选A。