问题
选择题
Ann is a careful girl．She always checks her exercises to there are no
mistakes．
A．look for
B．find out
C．make sure
D．think about
答案
答案：C
题目分析：句意：安是个认真的女孩。她总是检查她的习题以确保没有错误。A. look for寻找B.find out找出C. make sure确信D. think about考虑。根据句意，故选C