John was about to go back to sleep suddenly his bedroom became as bright as dayA. afterB

发布时间：2020-08-16 18:32:04

John was about to go back to sleep      suddenly his bedroom became as bright as day．
A. after
B. when
C. while
D. until

网友回答

A. after
(答案→)B. when
C. while
D. until
解析： 考查固定结构。Be about to do…when…刚要做某事，这时……；句意：约翰刚要回去睡觉，这时突然间他的卧室变得和白天一样亮。所以选B。
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