,we refused the offer.A.not finishing B.had not been finished C.not having finished D.not being finished.答案是D,但是我觉得不对，这个题是个独立主格结构，但是being finished,是现在分词的被动语态，应该表示正在被进行才是啊，finish是非持续性动词，不能用进行吧，我觉得把答案改成not having been finished才对吧？请老师您赶紧给我解释一下吧，还有一个问题请教一下孙老师I saw him coming是不是既可以理解成现在分词做宾补，又可以理解成动名词的逻辑主语的形式啊？盼望您的回复！