Tom went to basketball practice with （勇气） rather than fear in his heart．
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．
We're sure your dream will come if you work hard at it．