How do I say that questions kept revolving in my head but in a more expressive way? (for an essay)

Me with this questions i really need them right 4. any complex sentence contains a. independent clauses only b. dependent clauses only c. one independent clause and one or more dependent clauses d. neither independent clauses nor dependent clauses 5. an appositive is a phrase or clause that a. is a noun or group of words acting as a noun b. is placed right next to a noun c. gives more information about a noun d. all of the above 6. select the correctly punctuated sentence containing appositve. a. the vocational counselor an experienced placement specialist has agreed to me get a job. b. the vocational counselor, an experienced placement specialist has agreed to me get a job. c. the vocational counselor an experienced placement specialist, has agreed to me get a job. d. the vocational counselor, an experienced placement specialist, has agreed to me get a job.