Решение:
- My son is still too weak to go to school after such a serious illness.
- You can catch a cold if you stay too long in such hot water.
- How interesting stories my grandma tells me before I go to bed.
- Even the best doctors in the country can't cure this disease.
- I can prescribe you a very strong medicine for your pain.
- It was so luck to recover so quickly and to finish the school year together with my friends.
- Brian has lost his mobile. He can't find it.
- The pain was sudden and very strong. I could hardly move.
- Jill has put on weight. She has become obese.
Ответ: 1. too, 2. hot, 3. How, tells, go, 4. cure, 5. for, 6. so, so, 7. lost, find, 8. pain, hardly, 9. put on.