when to find him and where to find him --unknown to us

when to find him and where to find him --unknown to us Where to find him and how to find him____ not known to us.is lucky wants us to help him to find his home please help us find him可以改为please help us to find 还有 I went to see him only to find him out. When and where to hold the meeting _ still unknown to us.A.a I would like to find him Where was Davy while Linda was trying to find him?Where was I went to see him ＿ him out. A.finding B.find C.only to find last night ,I went to John's home to find him .when I came i The students want to help him to find the mask. I don’t know where I’m going to find him.（改为同义句）