Xiao Li was about to cheat in the exam the teacher came up, smiling to him.A. asB. whenC.

发布时间：2020-08-16 15:06:23

Xiao Li was about to cheat in the exam      the teacher came up, smiling to him.
A. as
B. when
C. while
D. until

网友回答

A. as
(答案→)B. when
C. while
D. until
解析：考查固定句型。Be about to do …when…正要做某事，这时……，所以选B。
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