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

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5.the program,they had to stay there for another two weeks.
A.Not completing
B.Not completed
C.Not having completed
D.Having not completed
横线在the 前面
5.the program,they had to stay there for another two weeks.
C 翻译 因为没有完成项目,他们不得不再在那里呆两个礼拜
首先从语法上排除D,这种用法是没的,应该用not have
表示原因也就是这是个独立主格结构,doing表示原因,又因为这个动作是过去的,发生在再呆两个礼拜之前所以用have结构