1. If the question is difficult, we can ask the teacher. 2. Lee will go to Disneyland if he saves enough money. 3. If I bought a lottery ticket, I might win the lottery. 4. My friend usually walks to school if he has enough time. 5. If the movie starts at eight, we will be late! 6. We can go waterskiing if Jeff's boat has gas. 7. The class will have a party if the students all pass their tests. 8. If there is milk in the refrigerator, I'll have milk with my cake. 9. If my sister eats all of the cake, I will get angry. 10. My mother always punishes my sister if she tells a lie.
NEGATIVES: (USE CONTRACTIONS)
11. If the world doesn`t end tomorrow, we'll have to go to work as usual. 12. If the pizza doesn`t come soon, we can eat a sandwich instead. 13. If there isn`t any milk in the refrigerator, I'll go to the supermarket. 14. If it isn`t snowing tomorrow, we can't go skiing. 15. My dad will paint the garage if it isn`t raining on Saturday. 16. If we don`t go to work, we won't get paid. 17. We can't go if we don`t buy a ticket. 18. I will call you if she doesn`t go to the movies, and we can go out together. 19. We should go jogging if it isn`t raining outside. 20. If the phone doesn`t ring this afternoon, I can take a nap.