When helen was only 1 year old, she had a terrible illness which left her unable to see or hear.( к этому предложению составить вопросы: общий,специальный,к подлежащему и разделительный)

Had Helen a terrible illness when she was only 1 year old?
When Helen had a terrible illness?
Who had a terrible illness when was only 1 year old?
Helen was unable to see or hear, wasn`t she?