Classify each sentence according to its structure: simple, compound, or complex.
Simple Compound Complex
Sentences:
My brother watched TV while I studied for my test.
I can go to the school dance this weekend if I finish all my chores in advance.
Caroline ran out of milk, so she made a quick trip to the store and bought some.
This year in PE, we are going to learn about volleyball, gymnastics, football, and lacrosse.
The monkey swung through every branch in the tree effortlessly and swiftly.