Which of the following sentences uses parallel structure?
A) I enjoy running, hiking, and to swim.
B) I enjoy running, hiking, and swimming.

Correct parallelism errors in a series of items:
I like to swim, bike, and running.
I like to swim, bike, and run.

Rewrite sentences to create parallel structures:
Original sentence: The teacher told the students to be quiet, to sit down, and don't talk during the test.

Which of the following sentences uses parallelism correctly?

A. She likes hiking, to swim in the ocean, and running in the park.
B. He enjoys playing basketball, jogging, and to lift weights at the gym.
C. The company needs to increase sales, reduce costs, and improve customer satisfaction.

Create complex, multi-level parallel structures in longer paragraphs:
I like to eat pizza, play basketball, and the color blue. In my free time, I enjoy swimming, watching movies, and reading about quantum mechanics. Some of my favorite books are crime thrillers, biographies, and a good sandwich. When it comes to music, I prefer classical, hip hop, and ice cream. Overall, my hobbies include hiking, baking, and fixing computers with a hammer.