1. If John doesn't leave now, he will miss his train.
2. She wouldn't help me if I was in trouble.
3. If he had been more careful he wouldn't have got cold.
4. They made up a lie if they had thought it would help me.
5. Your dog wouldn't be so fat if you didn't feed it so often.
6. If the weather is fine tomorrow, we will go to the beach.
7. She would worry if I told her the truth.
8. If I had to tell a speech, I would be pretty nervous .
9. If the trip hadn't been so expensive, I would have made it.
10. I shall invite you to drink, if I pass my English test.
11. He will be really disappointed if you don't tell him the truth.
12. If you had had the money would you have lent it to me?