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

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

admin2017-09-18  24
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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