Tests provide grades, but they also let you know what you need to spend more time _____ and they help make your new knowledge permanent.
时间:2019-11-08 19:06 来源:未知 作者:admin 点击:次
20. Tests provide grades, but they also let you know what you need to spend more time _____ and they help make your new knowledge permanent.
A. to study
B. study
C. studied
D. studying
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