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
13.Four and half hou
13.Four and half hours of discussion took us up to midnight,and break for cheese,chocolate and tea with sugar.
13.Four and half hours of discussion took us up to midnight,and break for cheese,chocolate and tea with sugar.
