问题
选择题
—Did you call Sara back?
—I didn't need to, _____ we'll have a meeting together tonight. [ ]
A. though
B. unless
C. because
D. if
答案
答案：C
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—Did you call Sara back?
—I didn't need to, _____ we'll have a meeting together tonight. [ ]
A. though
B. unless
C. because
D. if
答案：C