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一)根据句意选用and, but, or, so, while, for填空。 1. The ground is wet, _________ it rained last night. 2. It's a fine day today, _________ everyone is busy. 3. This is our first lesson, _________ I don't know all your names. 4. Take an umbrella with you, _________ you'll get wet. 5. She is a doctor _________ I am a teacher. 6. Never give up, _________ you'll make it.