Infinitive! Help, please!

1. I was too astonished to say anything.
2. The boy is clever enough to answer this question.
3. The storm was such as to destroy the ship.
4. He was gentleman enough not to argue with the lady.
5. The wind was so strong as to blow off the roofs of the houses.
6. The ship was too far to see the passengers.
7. I don't know him well enough to invite him to my birthday party.
8. The slopes of the hill were too steep to clinb them.
9. You have only to see it once to get interested in it.
10. The problem was too complicated to be solved at once.
11. His illness was not such as to stay in bed.
12. She was woman enough to keep the room tidy.
13. The impression was such as never to be forgotten.
14. You have only to reach out your hand to receive everything.
15. He was so fortunate as to get the whole sum of money at once.

1. to say anything
2. to solve this problem
6. to be seen clearly
7. to judge fairly
10 to take to it immediately
11. to be solved by one person

Никогда не понимала смысла подобных упражнений