问题
选择题
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
答案：B
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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：B