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题型：句子翻译 题类： 难易度：困难
外研版（2019）必修 第二册Unit 6 Earth first重点单词变形，语法，短语，句型练习
—I went to Ningxia and ________ there for one year, teaching as a volunteer.
By the end of last month, the new building {#blank#}1{#/blank#}.
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