问题
选择题
He called her names, so she won’t forgive him _____ he makes an apology to her. [ ]
A. although
B. once
C. if
D. unless
答案
答案：D
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He called her names, so she won’t forgive him _____ he makes an apology to her. [ ]
A. although
B. once
C. if
D. unless
答案：D