Ann is so careful that she always goes o
题型:选择题
问题:
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
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