18. Billy ____ danced around the room when he found out he’d been accepted at
Harvard University.
(A) mutually (B) exuberantly (C) sheepishly (D)seamlessly
(A) mutually -reciprocal (B) exuberantly -happy, excited, full of energy (C) sheepishly -embarrassed because you knew you've done sth. wrong (D)seamlessly -continuously, smoothly, without any interruptions, problems