Ответ:

1) A person can make their own decisions

2) If a person does not know what to do, they can ask someone for help

3) It is better to do my homework today

4) It is possible to become a doctor if you study hard in the university

5) It is imporrible to become the President of Russia right now

6) It is better for you to leave the building immediately

7) A person cant become a professor at the age of six