Parts of Speech

What is the conjunction in this sentence:
I would like a cheeseburger or a hot dog at dinner. 

• or

• at

• a

• like

Everyone at the concert had a wonderful time.

• noun

• adjective

• pronoun

• adverb

No! you cannot go into that office now.

• verb

• conjunction

• interjection

• adjective

shows what the subject is doing

• noun

• pronoun

• verb

• preposition

Several cats ran into Rob’s garage.

• conjunction

• noun

• article

• verb

• pronoun

The truck driver delivered the packages quickly.

• interjection

• adverb

• adjective

• verb

• noun

Fast runners won all the awards at the track meet.

• verb

• adjective

• interjection

• preposition

• conjunction

My friends and I walked home after school.

• article

• pronoun

• preposition

• adverb

• verb

was counting the ballots during social studies class.

• pronoun

• noun

• interjection

• adjective

• preposition

Will they finish the test on time?

• adjective

• verb

• noun

• pronoun

• adverb