to memorize;  to memorise;  to learn;  to pick up;  to feel;  to think
 now that you mention it;  come to think of it;  that reminds me;  on that subject;  speaking of which
 the other day;  lately;  recently;  meanwhile;  in the meantime
 solo exhibition;  one-man exhibition;  one-woman exhibition
 pretty;  lovely;  clean;  clear;  completely;  entirely
 person;  someone;  human beings;  mankind;  human (Homo sapiens);  (other) people;  others
 elementary school student;  primary school student;  grade school student
 is not;  am not;  are not;  isn't it?
 book;  document;  calligraphy (esp. Chinese);  penmanship;  handwriting;  letter
 chair;  stool;  post;  office;  position
 to surround;  to encircle;  to besiege;  to lay siege to;  to play (go, shogi, etc.)
 narrow;  confined;  small;  limited;  narrow-minded;  confining
 definitely;  absolutely;  absolute;  unconditional;  absoluteness
 to be caught in;  to be stuck in;  to stop by;  to drop in for a short visit;  to get mixed up in (trouble);  to get entangled in (a problem);  to fall for (a trick)
 thump-thump;  bang-bang;  pit-a-pat;  to beat fast (of one's heart);  to throb;  to pound
 until now;  so far;  up to the present
 to differ (from);  to vary;  to not be in the usual condition;  to not match the correct (answer, etc.);  to be different from promised;  isn't it?
 to get angry;  to get mad;  to tell someone off;  to scold;  to be angular;  to be square
 star (usu. not including the Sun);  planet (usu. not including Earth);  star (glyph, symbol, shape);  star (actor, player, etc.);  small dot;  spot;  star point (in go)
 secret;  private;  surreptitious
 to talk about;  to speak of;  to recite;  to chant;  to indicate;  to show
 to store;  to save up;  to accumulate (e.g. knowledge);  to build up (e.g. experience);  to grow (a beard, moustache, etc.);  to wear
 light;  illumination;  glow;  lamp;  light
 how;  in what way;  how about;  questionable
 still;  much more;  (not) yet;  still a long way to go;  still a long way off;  not there yet
 summer vacation;  summer holiday
 space (between);  gap;  period of time (during, while);  duration;  between (two parties or things);  among (a group);  relations (between)
 study;  research;  investigation
 time;  hour;  period;  class
 simple;  easy;  uncomplicated;  brief;  quick;  light
 yes;  yeah;  hum;  hmmm;  oof
 quite a chore;  not that easy;  fairly difficult
 diligently;  seriously;  perfectly;  properly;  sufficiently;  satisfactorily
 to be in time (for);  to serve (suit, meet) the purpose;  to be good enough;  to be enough
 at that time;  at that moment;  then;  on that occasion
 to send (a thing);  to dispatch;  to take or escort (a person somewhere);  to see off (a person);  to bid farewell (to the departed);  to bury;  to spend (time)
 to turn back (e.g. half-way);  to return;  to go back;  to recover (e.g. something lost);  to be returned;  to rebound
 to become;  to get;  to result in;  to turn out;  to consist of;  to be composed of;  to be completed
 to be responsible for;  to bear the responsibility of
 to send (someone) back;  to send (someone) home
 to raise;  to elevate;  to do up (one's hair);  to fly (a kite, etc.);  to launch (fireworks, etc.);  to land (a boat);  to deep-fry
 practice;  training;  drill;  (an) exercise;  workout
 to stream;  to flow (liquid, time, etc.);  to be washed away;  to be carried;  to drift;  to float (e.g. clouds);  to sweep (e.g. rumour, fire)
 to shine on;  to illuminate;  to compare (with);  to refer to