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

--How ___ do you go to the cinema?---Once a week.

If you are invited to any special occasion such as a wedding or a celebration, you’ll have to be ____ dressed.

It is the prevention of disease_____ its successful treatment that has led to the rapid increase of the world’s population.

He devoted himself __________ to his research and got many achievements.