2. 外语
  3. ______the program, they have to stay there for another two weeks.

______the program, they have to stay there for another two weeks.

admin2014-10-11  58
问题 ______the program, they have to stay there for another two weeks.
选项 A、Not completing
B、Not completed
C、Not having completed
D、Having not completed
答案C
解析 据题意此处强调not complete的动作发生于stay之前，故用完成形式。not放在分词前面。
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