I recently read the book The Hunger Games by Suzanne Collins.
These are some good examples of sentences in the book.
Complex Sentence: The result was Panem, a shining Capitol ringed by thirteen districts, which brought peace and prosperity to its citizens. Pg. 18
Simple Sentence: Then something unexpected happens. Pg. 24
These are some good sentence examples from Octotber Sky.
Compound Sentence: Brother Jim usually got bored and asked to be excused, but I always stayed, fascinated by their tales. Pg. 6
Compound Complex Sentence: When Mr. Carter’s son came home from World War I, he brought with him his army commander, a Stanford University graduate of great engineering and social brilliance named William Laird, who everyone in town called, with the greatest respect and deference, the Captain.