have completed表示还没做完,用完成时
由于作状语,所以改成现在分词形式,即having completed
改成否定,就是Not having completed
______the programme,they have to stay there for another two weeks.”
______the programme,they have to stay there for another two weeks.”
A.Not completing B.Not completerd C.Not having completed D.Having not completed
为什么?
A.Not completing B.Not completerd C.Not having completed D.Having not completed
为什么?
英语人气：259 ℃时间：2019-08-20 19:04:24
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