Question

【题目】 -- 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

Answer 1

【答案】C

【解析】试题分析：句意：我可以和你一起去剧院吗？恐怕不能，除非你有票，因为我只有一张票。Since既然，自从；if如果；unless除非； though虽然，所以选C。