请问一下I have been to shanghaiI have been to shanghai还原成一般现在时怎么还?如果been对应是的am I am to shanghai又错在哪?谁知道的,麻烦告诉一声,谢谢?

来源:学生作业帮助网 编辑:作业帮 时间:2024/08/15 08:24:15
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