2. 外语
  3. The discussion was so prolonged and exhausting that ______ we had to stop for refreshments.

The discussion was so prolonged and exhausting that ______ we had to stop for refreshments.

admin2005-12-10  14
问题 The discussion was so prolonged and exhausting that ______ we had to stop for refreshments.
选项 A、at large
B、at ease
C、at random
D、at intervals
答案D
解析
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