Для задания общих вопросов используем вспомогательные глаголы:
* Does he bake cakes?
Преобразуем остальные предложения:
1. Does he speak English? 2. Does he live in Africa? 3. Does he work in Canada? 4. Does he cook spaghetti? 5. Does he write a letter? 6. Does he drive a bus? 7. Does he eat salad? 8. Does he read books? 9. Does he drink coffee? 10. Does he play the guitar?