How to do it?I want to konw.（合并为一句）

How to do it?I want to konw.（合并为一句） when do you leave home?I want to konw it.(两句合并为一句) I want to How to do it?I want to know(合并为一句） I want to learn it.How do I save the document?合并为一句 How much did you throw away?I want to know（合并为一句）I want to k How old are you?I want to know.(合并为一句) How does red influence our moods?I want to know.合并为一句 How long did it take him to do homework Do you know?（合并为一句） but I do not konw how to do it I really don't konw how to do about it How do I live without you,I want to konw.How do I breathe wi i am too tired.i don't want to go out.（合并为一句）