riddle; puzzle; enigma; enigmatic; mysterious
discovery; detection; finding
endorsing and questioning the preceding statement; lamenting reflections on the preceding statement
parts; accessories; components
something or other; one thing or another; this or that
one day; all day (long); throughout the day; first day of the month
to end; to come to an end; to close; to finish
lesson; class work; teaching; instruction
time; hour; period; class
very; greatly; immense; enormous; serious; grave
textbook; coursebook; schoolbook
soundly (of sleeping); (sleeping) like a log
nodding off (while sitting); dozing
examination; quiz; test; tryout; rehearsal (in filming)
notebook; copy-book; note; noting down; (musical) note; laptop (computer)
to transcribe; to duplicate; to describe; to film; to picture
without; unless; have to do
speaking of; (I told you) already; come on
to pass (of time); to elapse
failure (in an examination); failing to advance (to the next year); falling short of the standard; not making the grade
things like; something like; someone like; such a thing as; (the fact) that; to think that
to cut into (a line, conversation, etc.); to force oneself into (e.g. a crowd); to wedge oneself into; to fall below (of stock prices, sales, etc.); to drop below
to begin to open; to come out; to smile broadly; to come apart at the seams (clothes)
sea cucumber (Holothuroidea spp.)
to place on (something); to give (someone) a ride; to give a lift; to pick up
to be surprised; to be amazed; to be frightened; surprise (e.g. surprise party)
I'm sorry; my apologies; may I come in?; permission; leave; dismissal
to return; to come home; to leave; to get home; to get to home plate
to fly; to race away; to vanish; to disappear; to rush over; to hurry over
recess; break time; break between classes; free period; recess time; recreation hour
busy; occupied; hectic; restless; hurried; fidgety
to come and stay; to drop in; to visit
known as ...; also known as ...; called ...; AKA
person; someone; human beings; mankind; human (Homo sapiens); (other) people; others
trouble; bother; annoyance; to be troubled (by); to be bothered (by); to be inconvenienced (by)
to look back on (the past); to reflect on; to look behind (at); to turn round (and look); to consider; to concern oneself about
what kind of; what sort of; what; no matter what (kind of); whatever; any
also; too; not ... either; (it's not possible) no matter what; although one might wish otherwise