题目内容
12. InJapan,you are not supposed to eat or drink while walking down the street(while)
造句：当我在写电子邮件时，他在读杂志。
12. He was reading a magazine while I was writing an email.
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题目内容
12. InJapan,you are not supposed to eat or drink while walking down the street(while)
造句：当我在写电子邮件时，他在读杂志。
12. He was reading a magazine while I was writing an email.