Please help. I'll mark brainliest if you get it correct.
1. Is this a simple sentence?
The baby bird opened its mouth to be fed.
2. Is this a compound sentence?
The hamster is hanging from the rope.
3. Is this a complex sentence?
The dog is jumping on the trampoline.
4. Is this a compound-complex sentence?
Although the computer is not real, the cat seems very focused on his "work."