【题目】—Are these your father's dictionaries?( )
—Yes, they .
A. does B. are C. isn't
【答案】B
【解析】
这些是你父亲的字典吗?是的,它们是。考查一般疑问句。问句是以Are these …?的句式提问,则答语是:Yes, they are./No, they aren't.故选:B。