根据句意及首字母提示补全所缺单词。
1. S____________ skaters have been skating for the whole five hours.
2. Their school is giving a concert to r____________ money for people in Wenchuan earthquake.
3. — Can you see a____________ in the classroom?
— No, I can't. I think they're having a meeting on the playground.
4. — What is the most c____________ hobby among these kids?
— It's flying kites.
5. My mother bought a new p____________ of shoes for me yesterday.