问题
选择题
—Could we go and watch the football game?
—No, ______ you have the tickets.[ ]
A. if
B. unless
C. because
D. since
答案
答案：B
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—Could we go and watch the football game?
—No, ______ you have the tickets.[ ]
A. if
B. unless
C. because
D. since
答案：B