3. We'll have a barbecue on Sunday if the weather isn't bad.
4. Unless I have a cold, I won't close the window.
5. Unless he finishes work early, he won't join you for a coffee.
6. If Paul doesn't come in the next five minutes, we'll start without him.
7. Unless the children behave themselves, they won't go to the cinema.
8. Your telephone will be cut off unless you pay the bill.
9. Penny won't go to the party if Sue doesn't go with her.
10. Unless she finds her ring, she will be very upset.