根据句意及首字母或汉语提示完成句子。
1. T _____ the problem was very difficult, they didn't give up and succeeded in the end.    
2. It's very important to get e _____ sleep every day to keep healthy.    
3. Tom moved to China in 2006. He has found many differences b _____ Chinese and American.    
4. The old photo often r _____ me of my childhood an my playmates.    
5. —What's the matter with Gina?      
    —She's s _____ out.    
6. Don't  f _____ the animals when you are in the zoo. It's not good for the animals.    
7. Could you please give me some  a _____ on how to learn English well?    
8. The heavy earthquake h _____ in Wenchuan on May 12th 2008.    
9. When Zhou Jielun appeared on the state, the f _____ of his all stood up and clapped their hands.    
10. S _____ is the best season of a year. When it comes, the trees turns green.