Tom was about to close the window__________his attention was eaught by a bird. A.when B.if C.and D....
2023-02-11 21:30:52 143次 2010年高考试题（全国卷2）解析版 单项填空 反馈错误 加入收藏 正确率 : 100%
题目内容：
Tom was about to close the window__________his attention was eaught
by a bird.
A.when
B.if C.and D.till
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