Eating properly and exercising _______ make one enjoy a longer and healthier life.

It is most _____that the environmentalists will come to the area to investigate the possible damage caused by the serious pollution.

—Are you going to Dalian by air?—No, the tickets are ____expensive for me. 

Compared with male graduates, a（n） ____ small number of female graduates can get employed when they go job-hunting．

The secret of his success is that he does everything___________．