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英语 小学 · 四年级 人教版 · 四年级上册 单选题 ★★☆☆☆ 编号 #9865
The children ___ in this factory in 2010.
A. worked
B. have worked
C. had worked
D. will work
章节：动词的时态 · 知识点：一般过去时 · 标签：时态,一般过去时,语法
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