问题
选择题
-- Can I join their club?
-- I am afraid you will be refused __________ you've passed all their tests.[ ]
A. if
B. although
C. unless
D. since
答案
答案：C
搜题请搜索小程序“爱下问搜题”
-- Can I join their club?
-- I am afraid you will be refused __________ you've passed all their tests.[ ]
A. if
B. although
C. unless
D. since
答案：C