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英语 高中 · 高二 北师大版 · 选择性必修第一册 单选题 ★★★★☆ 编号 #10381
The classroom needs ___ before the new term begins.
A. cleaning
B. cleaned
C. cleans
D. clean
章节：非谓语动词 · 知识点：非谓语动词 · 标签：非谓语动词,语法
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