target group; target persons
to lose sight of (one's companions); to stray from; to miss (one's chance to ...)
to stray from the right path; to go wrong; to go off the rails; to turn delinquent
I'm sorry; (it's) inexcusable; thank you very much (for help, etc.)
classroom; lecture room; department (in a university); class; lessons; school (for a particular discipline)
lesson; class work; teaching; instruction
serious; honest; sober; grave; earnest; steady
teacher; instructor; sensei; title or form of address for a teacher, master, doctor, lawyer, etc.; intimate or teasing form of address; (arch.) one's elder
How do you do?; I am glad to meet you
classic (work, esp. book); the classics
accurate; correct; precise; exact
please remember me; please help me; please treat me well; please do; please take care of
polite; courteous; careful; close; overly courteous; overly careful
pupil; student; schoolchild
to weigh on one's mind; to be worried about (something)
to go by; to go past; to run (between; of a rail service, bus route, etc.); to operate (between); to go indoors; to go into a room; to penetrate
jumping straight to the business, ...; I know this is abrupt, but ...; let's skip the pleasantries; getting to the point
willingness (e.g. to do something); eagerness; motivation; inspiration; determination; high aspirations
incomprehensible; mysterious; inexplicable; inscrutable; enigmatic; baffling
leading; guiding; commanding
habit (often a bad habit, i.e. vice); tendency; peculiarity; idiosyncrasy; crease; wrinkle
to be lucky; to be in luck; to be attached; to have; to be included
suspicious; dubious; unreliable; indecent; unseemly
place; spot; address; district; area; one's house; point
detailed; full; minute; knowing very well; knowledgeable (about); well-acquainted (with)
student guidance; student counseling
going around; patrol; round; tour
senior high school student
rest; break; recess; intermission
sleepover; overnight stay
showy; loud; gay; flashy; gaudy
naughty; mischievous; rascal; naughty kid
very; awfully; exceedingly; (not) at all; by no means; simply (cannot)
obedient; meek; docile; honest; frank; upfront (about one's feelings)
since some time or another; since who-knows-when
going in and out; entering and exiting; visiting regularly; frequenting; income and expenditure; incomings and outgoings; increase and decrease
please; somehow or other; one way or another
to weigh on one's mind; to trouble one's heart; to be concerned about; to worry about
mirror; looking-glass; barrel head; page added at the beginning of a document mentioning its purpose, date, author, etc.; mirror-shaped mochi
to determine (esp. a culprit or underlying cause); to pin down; to ascertain; (arch.) to stab to death
to entrust (e.g. a task) to another; to leave to; to passively leave to someone else's facilities; to leave to take its natural course; to continue (something) in a natural fashion (without particular aim); to rely fully on one's (full strength, great ability, long time taken) to get something done