1. With the development of economy,p______ becomes more and more severe.
2. The couple stood on the p_____,waving to their parents until the train disappeared in the distance.
3. Failure is a part of life and is r____ as a step towards success.
4.The o___ was such a success,and his mother recovered soon.
5. Having the courage to seize o____ before you is very important.
6. She is widely r____ as the best teacher in that city.
7.Cigarette smoking is r___ for about 90% of deaths from ling cancer.
8.She died as a r____ of her injures in the accident last year.