2. When Madonna's new record comes out, I won't buy it.
3. If president didn't go to Dallas, he would be alive.
4. If you heat water to 100 c, it boils.
5. If I didn't like sport, I wouldn't watch TV sports channel.
6. The Beatles wouldn't have existed, if Lennon and McCartney hadn't met.
7. If it isn't cold, I don't wear boats.
8. If Karl Marx and Chairman Mao met, they would have an interesting conversation.
9. If it is snowing in June in Europe, I will be able to go skiing.