2. 外语
  3. The speaker kept ______ talking until we got bored.

The speaker kept ______ talking until we got bored.

admin2009-08-17  48
问题 The speaker kept ______ talking until we got bored.
选项 A、on
B、back
C、up
答案A
解析 固定短语，keep on doing sth.。
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本试题收录于： 公共英语一级笔试题库公共英语（PETS）分类
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