How old is he 改为同义句 —is his—

How old is he 改为同义句 How old is he?改为同义句 How old is Ann?改为同义句 how old is he?的同义句 How old is he的同义句 写同义句:How old is he? How old is he (同义句转换) I don't know how old he is.(改为同义句） I have__ __how old he is. his grandfather is old,but he is healthy同义句 How old is your sister?改为同义句 How old is your sister 改为同义句 How old is your brother改为同义句,