You'd better not stay out with your friends． You need to come back by 9p．m．
中国天舟一号货运飞船长10.6米，可载重6.5吨（meter）
China's Tianzhou﹣1cargo spacecraft is 10.6 and can carry up to 6.5 tons of cargo．
共享单车的使用人数今年有望达到五千人．（number）
shared bike users is expected to reach 50 million this year．
In my opinion，teenagers should be to choose their own clothes．
Our teachers told us that the earth moves around the ．
My little brother is 7 years old．He's old to go to school．