—What do you think of Ann?—Ann is so careful that she always goes over her exercises to t

问题补充：

—What do you think of Ann?

—Ann is so careful that she always goes over her exercises to there are no mistakes.

A. look for

B. make sure

C. find out

D. think about

答案：

A. look for

(答案→)B. make sure

C. find out

D. think about

解析：look for寻找；make sure确认；find out查明，找出；think about考虑。句意：你认为安怎么样？安是如此小心，以至于她总是检查她的练习，来确认没有错误。结合语境可知选B。