помогите составить 10 предложений second conditional

1. If I play tennis every day, I will be in a good form.
2. If i was younger, I couldn't solve such problem as this one.
3. You will become cleverer, if you read these books.
4. They will be more succeful, if don't play videogames as much as they do.
5. If it rains, we won't walk with our friends.
6. If he didn't come there, they all could die.
7. If he didn't say that, she wouldn't hate him.
8. I will become a good drawer, if i begin studying art from now.
9. I could be a good student, if I work harder.
10. If i play videogames for a long time, maybe i will become a proffesional.