2. 外语
  3. They have been waiting for many hours to the opening ceremony, but the manager must have been______.

They have been waiting for many hours to the opening ceremony, but the manager must have been______.

admin2011-04-26  51
问题 They have been waiting for many hours to the opening ceremony, but the manager must have been______.
选项 A、off time
B、on time
C、ahead schedule
D、behind schedule
答案D
解析
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