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