Tom close the window when his attention was caught by a bird.A. was toB. went C. was abou

问题补充：

Tom close the window when his attention was caught by a bird.

A. was to

B. went

C. was about to

D. would

答案：

A. was to

B. went

(答案→)C. was about to

D. would

解析：考查固定句型：be about to do … when，即将做某事，正在那时，句意：汤姆刚要关上窗户正在那时他被一只鸟引起了他的注意。故选C。