who did write it可以吗

piease _ who did it. who did you write this letter to?被动语态 write it down 可以写成write down it吗 有什么规律 who bought it 和 who did bought it 哪一个正确 who bought it?和who did buy it? Jack told the policeman_____.A.who it did B.who did it C.who Who did you think it might be? They don't know _______________ A. who did it B. who did it Did you ever discover who did it.改成Did you ever ___ ___ ___ who did write the book这句话对吗语法突然忘了 Who do you think _ A did the book write B was the book writt i did it my way!who can stop me is