Answer:
An adjective could be tall.
A verb could be sat.
A subject can be Luis.
A verb for the end of the sentence could be quietly (technically an adverb, but should still count).
Step-by-step explanation:
Adjectives are descriptive words that are added in order to emphasize meaning, such as short, tall, colorful, or difficult.
Verbs are action phrases that are added to depict an action performed by the subject. Examples include sit, run, sleep, or write.
A subject is any person, place, or thing. Since the pronoun is he, it is inferred that the subject is a person, so any masculine name can be applied here (I used Luis).
A verb for the end of the sentence must be an adverb because it is an action described by an adjective. I used quietly, but you could use gracefully, loudly, or elegantly.