F. WRITING 1. Combine the pairs of the sentences, using the conjunction in the brackets. 1. Ice sheets and glaciers are shrinking/ Sea levels are rising at the same time. (while) While 2. The atmosphere changes and the heat increases. It can cause a number of problems. (when) 3. We can solve any problem. It's important to understand it first. (before) 4. We should always turn off the lights. And then we leave a room. (as soon as) 5. You go to the toilet. Wash your hands thoroughly then. (after) 6. We have killed off all our marine life. We must not wait till then. (until) 7. The disaster passes. Then people will need money and determination to rebuild. (after) 8. Balloons are released into the air. They become deadly litter right after that. (as soon as) 9. I won't return my book to the library. I'll finish my project. 10. He was making dinner. The frying pan caught on fire. 11. The other passengers will get on the bus. We will leave. (until) (while) (as soon as)
