Complete the sentences. 1. This car c_ me a lot of trouble. 2. Now peo- ple understand how dangerous chemical w Sare. 3. Don't p the air, water and atmosphere! 4. The old Queen was sure that somebody had tried to p n her. 5. Do you know where the town rubbish d is? 6. We all want to live in a healthy en 7. It's very difficult to s in this bad climate.