题目内容

— May I go to the concert with you?

— I’m afraid not ____ you have a ticket, because I have only one.

  A. since    B. if     C. unless    D. though

练习册系列答案
相关题目

违法和不良信息举报电话:027-86699610 举报邮箱:58377363@163.com

精英家教网