The answer to your question would be the following one:
1. I don't want to go. I am very busy.
2. The cat was chasing a moth. He knocked down a plant.
3. Pilate washed his hands. He recognized Christ's innocence.
Complex sentences have one independent clause and one dependent clause , as the original examples show. On the contrary, simple sentences consist of only one clause with a single subject and predicate.
