14. whom you met last week.
Explanation: An adjective clause—also called an adjectival or relative clause—will meet three requirements: First, it will contain a subject and verb. Next, it will begin with a relative pronoun [who, whom, whose, that, or which] or a relative adverb [when, where, or why].
15. Since I do not want a hamburger, I will have a chicken sandwich.
Explanation: The original sentence is: I do not want a hamburger. I will have a chicken sandwhich. This instantly eliminates the top 3 answer choices, because the author specifically does not want a hamburger. The last sentence is just incorrect because , in the original sentence, it never says whether or not they like hamburgers.
16. Even though our car broke down, we made it to the concert on time.
Explanation: The third sentence is incorrect because it doesn't contain "even though". The fourth is missing a comma, therefore grammatically incorrect. The last one is backwards, and the first one is missing a comma and backwards.
