问题
选择题
Ann is a careful girl．She always goes over her exercises to ____ here are no mistakes．
A．look for
B．make sure
C．find out
D．think about
答案
答案：B
题目分析：句意：安是个认真的女孩。她总是检查她的练习题以确定没有错误。A寻找B确定，弄清楚C找出，查出，D考虑。
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