It is said that to classic music may be helpful in improving teenagers’ taste.
A. exposed
B. exposing
C. being exposed
D. having exposed
网友回答
A. exposed
B. exposing
(答案→)C. being exposed
D. having exposed
解析：考查非谓语动词。exposing to classic music may be helpful in improving teenagers’ taste动名词短语作主语，句中it为形式主语，故选C。