having done & doingthe heavy snow swept across many parts of China,______ many people's family reunion at the 2008 Spring Festival impossible.A.made B.making C.to make D.having made.选什么?B和D的用法有什么不同?在什么情况下可以选?

not having done 还是having not done? never having done还是having never done having done的用法 doing having done being done having been done 造句! having done和having been done怎么用 如题 not having done 和 having not done 的区别 having been done和having done的区别rt having done的句子是什么时态的,having done 咋用~ having done可否作宾语,如try having done sth 用having been done 造句 having been done的用法 having been done是什么时态? having done 与doing 区别 用after having done造句 being done,have been done和having done怎么分辨 having done 、done、 being done、 having being done 的区别与详细用法 分词作状语：doing ,done ,having been done ,noe having done ,都怎么用?not having done 【答好了加分】having done,did,doing,being done having done,having been done 在句首区别区别