Постройте специальный вопрос к членам предложения к подлежащему: 1. he visited mary in the hospital. 2. i shall try to do it next time. 3. george was found guilty

К членам предложения
1. Where did he visit Mary?
2. When shall I try to do it?
3. What happened to George?
К подлежащему:
1. Who visited Mary in the hospital?
2. Who will try to do it next time? 
3. Who was found guilty?