—What are those?— are their booksA．That B．They’re C．They

发布时间：2020-08-20 17:34:55

—What are those?
—     are their books．
A．That                B．They’re               C．They

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解析：
由题目中的What are those?可知是复数概念，that表示单数，故A错。回答中有个are，B中They’re就重复了，故B错，选C。
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