II. Write the correct form of each verb in brackets. 1. If you put the glasses into very hot water, they……………………(crack). 2. If Peter………………(be) late, we will wait for him. 3. No one…………………..(help) if you don’t help yourself. 4. If you boil water, it…………...……(disappear) into the atmosphere as vapor. 5. If it rains tonight, I…………………..(not go) for walk. 6. The town will flood if there …………………(be) a downpour. 7. The bear will attack you if you…………………..(provoke) it. 8. If we sit too far from the screen, I……………..(not be) able to see the film. 9. If there is an earthquake, the villagers ……………….(stay) in the shelter. 10. If we plant more trees, the air………………….(be) fresher. III. Rewrite the sentences, so that their meaning stays the same, using the beginning given for each. 1. We must leave now, or we will miss the plane.  If we don’t …………………………………………………………………… 2. Be careful or you may fall.  If you…………………………………………………………………………. 3. Hurry up or we’ll be late for the concert.  If……………………………………………………………………………… 4. Our sources of energy will soon end if we don’t try to save them.  Unless………………………………………………………………………… 5. You will catch a cold if you don’t keep your feet dry.  Unless………………………………………………………………………… 6. If she doesn’t work harder, she’ll lose her job.  Unless…………………………………………………………………………