1. Justin Timberlake's new record come out I won't buy it.

2. President Kennedy hadn't gone to Dallas, he wouldn't have been shot.

3. you heat water to 100°C, it boils.

4. I didn't like sport, I wouldn't watch the TV sports channel.

5. wouldn't have existed if Lennon and McCartney hadn't met.

6. it's cold I wear boots.

7. have had an interesting conversation if they had met.

8. it snowed in June in Europe, Iwould be able to go skiing then.

9. Avatar hadn't used 3D technology, it wouldn't have made more money.

10. people didn't work very long hours, they wouldn't feel so stressed.