A. Xiaoyin is determined to be an excellent social service worker, and her main energy after class should be devoted to community activities and social activities.
B. Xiaoyan plans to go to graduate school after graduating from college. It is the most important thing for him to learn the postgraduate courses well.
C. Xiaoquan knows that college students should develop in an all-round way. He cherishes every opportunity before him and never misses it.
D. Xiao Weng is a Chinese language and literature major, and fitness exercise is not necessary for her.
Correct answer: ABCD