помогите пожалуйста , 7 класс английский

1. If you don't work hard, you'll fail your exam.
2. If we go home now, we'll be able to see the beginning of the film on TV.
3. I'll be in my office if you need anything.
4. We'll get a video this evening if there are some good films in the shop.
5. You won't get there on time if you don't leave immediately.