the program they have to stay there for another two weeks.A. Not completingB. Not complet

问题补充：

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

A. Not completing

B. Not completed

C. Not having completed

D. Having not completed

答案：

A. Not completing

B. Not completed

(答案→)C. Not having completed

D. Having not completed

解析：答案C