根据首字母填空.What h( ) while they were on the phone?

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根据首字母填空.What h( ) while they were on the phone?
根据首字母填空.
What h( ) while they were on the phone?

根据首字母填空.What h( ) while they were on the phone?
happened
我给你解析一下吧 这样你下次再碰上这种题目时就会有思路了~
首先 有没有注意到 happen用的是过去式happened?因为在句子中 what happened是一个固定问句放在句首 意思是“发生什么事了?”所以用的是过去式而不是原型
然后这整句的意思是What happened while they were on the phone?当他们打电话的时候发生什么事了?while是当……的时候

happened

happened