第一个
第三个只要吧when改成while就好了,while接进行时,when接一般式
We were having supper when the phone rang.We were having supper when the phone ringing.We were having supper when the ph
We were having supper when the phone rang.We were having supper when the phone ringing.We were having supper when the phone was ringing .哪个句子是对的?
英语人气：588 ℃时间：2019-10-24 02:35:23
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