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In the experiment we kept a watchful eye ______ the developments and recorded ev
In the experiment we kept a watchful eye ______ the developments and recorded ev
游客
2023-11-10
34
管理
问题
In the experiment we kept a watchful eye ______ the developments and recorded every detail.
选项
A、in
B、at
C、for
D、on
答案
D
解析
考查固定搭配。keep an eye on意为“密切注意”,是一个固定搭配,因此选项D为正确答案。
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