问题
选择题
-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
答案
答案：C
搜题请搜索小程序“爱下问搜题”
-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
答案：C