heart attack -- n. a suddedn painful and dangerous condition in which your heart stops beating properly

tuition -- n. money that is paid to a school for the right to study there

entire -- adj. complete or full

focus -- v. to put most of your attention on a matter or subject

graduate -- n. a student who complete his or her studies at a school

core -- adj. the central or major issue

equation -- n. the issue at hand

guess -- v. to form an opinion or give an answer about something when you do not know much or anything about it
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