In the experiment we kept a watchful eye __________ the development and recorded every detail. ...
答案:1 悬赏:30
解决时间 2021-01-16 12:49
- 提问者网友:十年饮冰
- 2021-01-15 18:44
In the experiment we kept a watchful eye __________ the development and recorded every detail. ...
最佳答案
- 二级知识专家网友:春色三分
- 2021-01-15 19:54
B |
考查固定短语keep an eye on, 意为“注视(密切注意)……(的举动)”。 |
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