Answer:
1. The sun was shining brightly, and the birds were chirping happily in the trees.
2. She loves to dance, but she also enjoys playing the piano.
3. The students worked hard on their project, so they were proud of their accomplishment.
4. I prefer to drink tea in the morning, but I like to have coffee in the afternoon.
5. He woke up early, yet he still managed to be late for his meeting.