题干

--- Are these pens your sister’s?
--- No, _______ aren’t. They are _______ sister’s.
A.they, Lily’sB.they, LilyC.these, Lily
上一题 下一题 0.65难度 单选题 更新时间:2015-12-01 03:06:12

答案(点此获取答案解析)