Tom was about to close the window ___ his attention was caught by a bird.A.when B.if C.and D.till-高一

题目简介

Tom was about to close the window ___ his attention was caught by a bird.A.when B.if C.and D.till-高一

题目详情

Tom was about to close the window ___ his attention was caught by a bird.
A.when B.if C.and D.till
题型:单选题难度:中档来源:不详

答案

A
固定句型。Be about to do sth when…正要做某事…在这时…

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