Fill in the prepositions: 1. You are making so much noise! What are you arguing (1) ______? 2. I haven't heard anything from Michael for too long. It worries me. I'm afraid he is (2) ______ trouble. 3. Don't get angry with me. It's not my fault. Take a seat. I'll explain (3) ______ happened. 4. We must study the situation very carefully. The whole project depends (4) ______ our decision. 5. Oh, don't worry about the children. I'll look (5) ______ them while you are away. 6. It doesn't matter whether you've won or lost. You did your best and we are very proud (6) ______ you anyway.