问题
选择题
In the experiment we kept a watchful eye __________ the development and recorded every detail.
A．with
B．on
C．for
D．to
答案
答案：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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In the experiment we kept a watchful eye __________ the development and recorded every detail.
A．with
B．on
C．for
D．to
答案：B
考查固定短语keep an eye on, 意为“注视（密切注意）……（的举动）”。