Be careful when you take exams. Check your paper to there are no mistakes before you hand

问题补充：

Be careful when you take exams. Check your paper to there are no mistakes before you hand it in.

A. make sure

B. find out

C. think about

D. deal with

答案：

(答案→)A. make sure

B. find out

C. think about

D. deal with

解析：考查固定短语。make sure意为：确保，find out 搞清楚，弄明白。Think about 考虑；deal with 处理。句意：当你考试的时候，要认真。在你交试卷之前，检查你的试卷确保没有错误。故选A。