题目内容

完成下列句子

This is not ________ classroom(我们的).It's ________(他们的). classroom ________ is over there(我们的).

答案：our,their,ours
解析：

our和their是形容词性物主代词，后接名词作定语，ours是名词性物主代词，等于 our classroom．第一句中已出现classroom，后面就要省略，避免重复．


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