根据句意及首字母提示完成句子

1. The sun is s_______ all day.

2. He bought a train ticket with a r_______.

3. It is p_______ for him to work out the problem because he is very clever.

4. There are many clouds in the sky, you'd better take an u_______ with you.

5. The wind is too s_______ for the old man to walk.

6. When is the best time to v_______ your country?

7. What will be the w_______ like?

8. It is p_______ to go to the Great Wall.