You should worry about what you are not doing.
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There are many clubs or organizations on campus.
A. 对
B. 错
It is important to get out of your dorm.
A. 对
B. 错
You need to put your mental and physical health before anything else.
A. 对
B. 错
If you miss a class, you must see your professor immediately.
A. 对
B. 错