The purpose of the article is to draw public attention ______ the problem.

. The ancient Chinese vases _______ display attracted lots of experts and collectors, some of whom suggested they______ on the next fair.

Only by ______ your attention ______ what you are learning can you learn it well.

After the heavy rain, the level of the lake rose ___ 1 meter ___ 8 meters.

(2013·安徽六校教育研究会测试)Before selecting the curtain for your newly decorated house, it's important to know what colors look great ________ the wallpaper.