2. 外语
  3. They are said______each other long time before they met in Harvard University where they worked together on a research project.

They are said______each other long time before they met in Harvard University where they worked together on a research project.

admin2013-10-17  77
问题 They are said______each other long time before they met in Harvard University where they worked together on a research project.
选项 A、to know
B、to have known
C、knowing
D、having known
答案B
解析 to have known不定式完成式表示过去已经发生的情况。
转载请注明原文地址:https://www.kaotiyun.com/show/NfXO777K
0

在职攻硕英语联考

相关试题推荐
随机试题
最新回复(0)