问题描述：
选什么?都是啥意思?
Due to the fact that she was naturally timid,she shrank from any ____ social and cultural activities.
A) comprehension of B) study on
C) success in D) participation in
Due to the fact that she was naturally timid,she shrank from any ____ social and cultural activities.
A) comprehension of B) study on
C) success in D) participation in
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