Task 3. Grammar. Choose the correct answer (if or unless)

1. We won't pay any money ...  we receive all the goods before Friday. 

2. We’re going for a bike ride this weekend ...  it rains. 

3. I’ll accept the job  ... they offer me it. 

4. ... you come to the party, I will tell you my secret. 

5. I won’t have any money ...    my dad gives me more. 

6. ...   you start writing your essay now you will finish it at 6 p.m. 

Choose the correct form.

7. If you eat / will eat greasy food, you will become fat. 

8. If I leave now, I will arrive/arrive in New York by 8:00 PM. 

9. If you don't go to the party, I am / will be very upset. 

10. They won't know the truth if you won't tell/don't tell them. 

11. If the weather is bad we will stay/ stay in the hotel and read.

12. If she leaves/doesn’t leave her bag there, someone will take it.