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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?
人气:317 ℃ 时间:2019-10-24 02:35:23
解答
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
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