___ the invention of the steam engine, the industrial revolution played a vital role in human history.
About 10,000 enthusiasts took part in the 2013 Sports Lottery New Year Climbing ________ on Tuesday at the Beijing Badaling section of the Great Wall.
When I graduate from this famous university, I’ll _______ what I have learned to everyday life.
So difficult ________ it to live in an English-speaking country that I determined to learn English.
In____review of 44 studies, American researchers found that men and women ____who ate six key foods daily cut the risk of ______ heart disease by 76%.
Terribly sorry, I came home at last. I _____of the supermarket ________so crowded.