Question

write a complex sentence with an adjective clauses and an adverb clause

Answer 1

A complex sentence means that it has an adverb, adjective or noun clause.

Adverb clauses start with words like although, because, unless, until (subordinating conjunctions).
BECAUSE THE ROADS WERE ICY, school was canceled.
I didn't understand the problem UNTIL I READ THE CHAPTER.

Adjective clauses start with who, what, that, etc. (relative pronouns)
The person WHO ANSWERED THE QUESTION got a prize.
I enjoyed the movie THAT WE SAW LAST NIGHT.

Adverb and Adjective clauses:
She wouldn't stop looking for the person who took her phone until the police arrived with the suspect.

Basically, if you take the adjective or adverb clause out of the sentence, the rest should make sense by itself, because it is an independent clause. (The independent clauses in my sentences are NOT capitalized.)