When John woke up he was in the hospital, but he didn’t know how that had .A. been happene

发布时间：2020-08-16 12:21:20


When John woke up he was in the hospital, but he didn’t know how that had       .
A. been happened
B. e about
C. been e about
D. been taken place

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A. been happened
(答案→)B. e about
C. been e about
D. been taken place
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