When we are unhappy,we can not do well _____school or _____work.用适当介词填空

问题描述:

When we are unhappy,we can not do well _____school or _____work.用适当介词填空
Maris always does well______her subjects at school or at home.用适当介词填空

when we are unhappy,we can not do well in school or in work.
Maris always does well in her subjects at school or at home.