Answer:
Annie fished, biked, and hiked last week.
My brother likes corn, hates broccoli, and enjoys candy.
Millie and Anna swam, ran, and biked.
My cousin and I watched movies, ate popcorn, and drank soda.
Step-by-step explanation:
Simple sentences only contain one clause with a subject and predicate. So, simply write who does what, minding how many subjects and verbs you were required. Avoid making a complex sentence; don't make mulitple parts in the sentence.