I'm pretty sure it's the last one; Everyone was having a wonderful time at the party, because the present tense helps it feel more active.
D. Is correct. The thesis statement is what your entire essay/paper will be about!
The correct answer to complete the sentence above is <span>A. </span><span>whoever. The objective pronoun whoever is used when it is the subject who does the action as the verb demands it while whomever is used as an object of a verb or preposition.</span>
