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.
