she looked up the number in the phone book to _______ that she got it right.

问题描述:

she looked up the number in the phone book to _______ that she got it right.
A. work out B. try out
C. make sure D. think about

选C
解析:首先你要明白这句话的额意思:他查找电话本,以确保她是对的
work out 想出;解决 try out试验;试用 think about 考虑 ;很明显这三个不合题意