We need to ______an eye on all the activities to make sure that people stay safe.

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问题 We need to ______an eye on all the activities to make sure that people stay safe.

选项 A、catch
B、keep
C、take
D、bring

答案B

解析 keep an eye on sth．为固定短语，意为“注意；照看；留心；照管”，故选B。

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大学英语三级B级

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