Answer: While in the forest, I heard a loud roar.
Step-by-step explanation:
We are given the words forest and roar. To use these words in a meaningful sentence, we need to think about possible ways we would use these words together. Both roar and forest are nouns, so we can use the verb hear to complete our sentence. You may hear animals roaring in the forest, so we can use this for our sentence.
While in the forest, I heard a loud roar.