1. 我们中有许多人面对困难时放弃了，那么（我们）将永远都不可能成功。
2. A lthough/ Though your classmates may be better than you in some ways, you may be better than them at other su
bjects.
3. success
4. We are in a world full of compet
ition.
5. Believe in yourselves, and you will be successful one day.
略