-----They used to be good friends, but now they are like strangers. ----- How th
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-----They used to be good friends, but now they are like strangers. ----- How _____ this ______?
A. were; come about B. did; come about
C. were; taken place D. were; happened
试题答案
【答案】
B
【解析】? come about, take place, happen都是发生的意思，均无被动语态。