问题：
[单选]13.Four and half hours of discussion took us up to midnight,and break for cheese,chocolate and tea with sugar.
A . a;a
B . the; the
C . 不填；the
D . a;不填
参考答案：A
参考解析：
本题暂无解析
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13.Four and half hours of discussion took us up to midnight,and break for cheese,chocolate and tea with sugar.