guarantee; security; assurance; pledge; warranty
possible; potential; practicable; feasible
even if; no matter (what); if; though; although; supposing
summer term (e.g. school); summer period
opening (a door, window, etc.); leaving open; opening up (e.g. to the public); allowing (public) access
homework; assignment; pending issue; unresolved problem; open question
to ask a question; to begin to ask a question
checking answers (e.g. to homework problems); verifying one's answers
rest; break; recess; intermission
bed; berth; crib; cot; kip; bedroom
student (esp. a university student)
corruption; immorality; lapse from virtue; fall from virtue
and (also); both ... and; as well as
reserve; spare; preparation; preliminaries
school; proof (of a book, document, etc.); counter for proofs
inorganic matter; mineral matter; cold; inhuman; robotic
effort; exertion; endeavour; endeavor; hard work; striving
to relax one's mind; to feel relaxed; to become remiss; to cease paying careful attention
to straighten up; to sit upright
to span; to bridge; to cross; to straddle
atmosphere; air; magnanimity; generosity
daytime; during the day; time from sunrise until sunset; diurnal period
willingly; voluntarily; on one's own accord
(just) making sure; just to be sure; just in case; for caution's sake
moderate (degree); proper (amount); temperate; suitable
sticking (in one place, position, etc.); settling; becoming established (of a custom, system, etc.); taking hold; fixation (photography); fixing
sophism; chop logic; far-fetched argument; quibble; cavil; argument for argument's sake
straight; straightforward; direct; neat (e.g. spirits); black (e.g. tea, coffee); entering university directly from high school; fast ball
and yet; though; when; in spite of
carefree; free from worry
it doesn't matter what; anything is fine
woman; female; feminine gender
in general; generally; mostly; gist; point; main idea
to climb over; to get over; to surmount; to overcome; to surpass; to overtake