Question

【题目】__________ the program , they have to stay there for another two weeks.

A. Not completing

B. Not having completed

C. Not completed

D. Having not completed

Answer 1

【答案】B

【解析】考查现在分词完成式的否定形式，they和complete是主动关系，complete发生在have to stay there之前，因此用现在分词的完成时，not应放在doing/having done前，句意：没有完成计划，他们不得不再待两个星期。故选B。