As students, we must ________ on our studies and work hard instead of fooling around. A.investigate ...
2022-05-10 12:22:17 92次 2020届天津市北辰区高三高考模拟考试（三模）英语试卷 单项填空 反馈错误 加入收藏 正确率 : 100%
题目内容：
As students, we must ________ on our studies and work hard instead of fooling around.
A.investigate B.memories C.approach D.concentrate
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