1. I finish work at 5.00 (on Tuesdays) . When do you finish work at 5.00 ?
When => Quand ?
2. I make supper for (the children). Who do you make supper for ?
Who ... for ? => Pour qui ? ( who ? = qui ? / for = pour )
3. I (study) after supper. What do you do after supper ?
What ? = ce que / => Qu'est-ce que ( vous faites ... ) ?