Tom was about to close the window his attention was caught by a bird.A. when B. ifC. and D. till

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编辑：chaxungu时间：2026-04-27 03:24:35分类：高中英语题库

【题目】Tom was about to close the window　　　　his attention was caught by a bird.

A. when B. if

C. and D. till

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【答案】A

【解析】

句意：汤姆正要关上窗户，就在这时一只鸟引起了他的注意。在句式“...be about to do...when...”中，when作并列连词，相当于and at that time，句中was about to close为标志词，故答案为A项。