Question

【题目】— Is this your pen?— _________. It's her pen.
A.Yes, it is.
B.No, it isn't.
C.It's my pen.
D.No, this isn't.

Answer 1

【答案】B
【解析】句意：—这是你的钢笔吗？—不是，它是她的钢笔。根据It's her pen可知，这里应该是否定回答，回答this做主语的句子主语应使用it，故选B。