The world is changing , and we should keep up with the pace of change. (rapid)
Recycling your rubbish is a great habit. However. it's even better to turn your rubbish into something new and . (use)
According to some studies, the you read, the less you understand what you have read. (fast)
It's to talk with your mouth full.(polite)
Growing up is hard for everyone. Laura has to face lots of stress as a . ( teenage )
After the Great Wall Station, Zhongshan, Kunlun and Taishan, China is now building its research station in Antarctica (南极洲). ( five )