Hard as a teacher may try, he can’t to make all his students make a difference in study, l

发布时间:2020-08-16 09:49:25


Hard as a teacher may try, he can’t     to make all his students make a difference in study, letting alone in life.
A. make sure
B. be sure
C. guarantee
D. insure

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A. make sure
B. be sure
(答案→)C. guarantee
D. insure
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