Упражнение 3. 0 or 1 Conditional.

1. If you drop an apple, it falls. 2. I get tired if I work too much. 3. Water boils if you heat it to 100 C. 4. I will phone my friend if I have time today. 5. If you freeze water, it turns into ice. 6. If it rains today, I will stay at home.