(2013·山西四校二模)Studies show that students often ________ to too much pressure tend to develop mental problems.

A lot of coal miners died on the job last year, ____ the local government to shut nearly 500 small mines in Shanxi Province alone.

My daughter loves writing and has _____many articles to her school edition---the Sun Breeze---and even the local newspaper.

_______ the best in a recent science competition, the three students were awarded scholarships ________21,000 dollars. 

I would appreciate________back this afternoon so that we can reach an immediate decision.