完成句子 (共10小题，每小题1分，满分10分)  请根据句子的意思和汉语提示完成下列句子，每空只填一个单词。
A ______________ (平衡) state of mind is very important for those who want to live a healthy life.
The government encourages everyone in the society to ______________ (贡献) aid for victims (灾民) in Sichuan. 
You can’ t leave the classroom without the teacher’s ____________________（许可）
He works in another city, so his parents are very ________________(关心；挂念) about him.
 In my _________________( 意见，看法 ), it is of importance to read aloud in the morning.
We finally ___________________(成功) in finishing the work..
He has changed so much that I can hardly __________________ (认出) him.
The plane exploded and we could see the smoke even in the ______________(远处  ).
You will _________________ (有益于；受益) greatly if you regularly consult with your teacher.
We should be _________________ (乐观的) and always keep a positive attitude towards life.