Tom was about to close the windows his attention was caught by a bird. A. when B
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Tom was about to close the windows _____his attention was caught by a bird.
A. when B. if C. and D. till
试题答案
A
解析:
略

Tom was about to close the windows _____his attention was caught by a bird.
A. when B. if C. and D. till
A
解析:
略