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Here are the completed sentences: 0. As the weather was good, we went swimming every day. Because of the good weather, we went swimming every day. 1. I didn't go to the disco because I hate loud music. I hate loud music, so I didn't go to the disco. 2. I've spent all my money, so I can't get a taxi home. I can't get a taxi home because I've spent all my money. 3. Since we are both eighteen this month, we've decided to have a big party. We're both eighteen this month, so we've decided to have a big party. 4. There will be a lot of traffic, so people should drive carefully. There will be a lot of traffic, so people should drive carefully. (or) There will be a lot of traffic, and therefore people should drive carefully. 5. Kate had never sung in public before. Therefore, she felt extremely nervous. Kate felt extremely nervous because she'd never sung in public before. 6. The cost of petrol is very high, so I've decided not to get a car. I've decided not to get a car because of the high cost of petrol.