Answer:
he expects to buy
Step-by-step explanation:
"he expects to buy" is the complete adjective clause because:
1. It answers the question "which car?"
2. It gives us more information about the car.
3. It has a subject "he" and a verb "expects"
An adjective clause is known as a dependent clause which usually modifies a noun or a pronoun. This type of clause comes immediately the noun or pronoun they modify.
4.