it is only put coordinating conjuction or subcoordinating or adverbs ;) thanks so much 21. My dog likes to play fetch. She never brings the ball back to me. (compound sentence: coordinating conjunction) Answer: My dog likes to play fetch, but she never brings the ball back to me. 22. The dog came rushing in. The cat ran upstairs. (complex sentence) Answer: The dog came rushing in while the cat ran upstairs. 23. I enjoy reading. I don’t enjoy cooking. (compound sentence: conjunctive adverb) Answer: I enjoy reading, but I don’t enjoy cooking. 24. My friend gave me a ride. It was raining. (complex sentence) Answer: My friend gave me a ride because ??? it was raining. 25. Ben is thoughtful. He always plays with me when I’m lonely. (compound sentence: conjunctive adverb)