问题
选择题
—May I go to the theatre with you?
—I’m afraid not ____ you have a ticket, because I have only one.
A．since
B．if
C．unless
D．though
答案
答案：C
题目分析：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。