His brother graduated from Peking Unoversity in1998 and--------as a teacher in the weat ever sinceA has workedB is working为什么不是B ,虽然有ever since 是现在完成的标志,但是通过句意可以看出是一直在西部工作啊.

来源:学生作业帮助网 编辑:作业帮 时间:2024/07/27 11:20:01
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