How old is he? I don't know （变为同义句）I don't know ____ ____

How old is he? I don't know （变为同义句）I don't know ____ ____ I don't know how I can fly a kite(同义句） I don't know how ____ I don't know how old he is.(改为同义句） I have__ __how old he is. I don't know how old he is 同义句转换 I don‘t know how i should keep calm I don’t know _____ ____ I don't know much about China的同义句 I know only _____ ____ abo I don't know how long he ____ from home.He ____ on a busines i don't know how to deal with it同义句 i don't know ( )( )( )( I don`t know how to have fun.(同义句） I don`t know how to have 1 I don't know ____ I don't know when he will have the meeting 同义句 I don't know I don't know how I can get to the airport(改同义句） I.don't know