to call the roll;  to take attendance
 nth period (e.g. nth class in school day)
 science (inc. mathematics, medicine, etc.);  natural science;  science department (university);  science course;  science (as a school subject)
 on the way;  en route;  in the middle of;  midway;  halfway
 to return (something);  to restore;  to turn over;  to turn upside down;  to pay back;  to retaliate;  to respond (with)
 to look toward;  to have one's eyes drawn towards something
 lesson;  class work;  teaching;  instruction
 law of conservation of mass
 suitable;  proper;  appropriate;  perfunctory;  half-minded;  sloppy
 each (person);  individually;  one by one;  one at a time;  in turn
 and;  and then;  thus;  and now;  and finally
 having a headache;  racking one's brains;  troubling over something
 the very end;  finish;  to the very end;  to the last;  thoroughly
 to avoid (physical contact with);  to avoid (situation);  to ward off;  to avert;  to put aside;  to move out of the way
 should (be);  bound (to be);  nock (of a bow);  nock (of an arrow);  nock-shaped grip (between thumb and forefinger);  wooden frame on the tip of the mast of a Japanese ship that prevents the hawser from falling out
 and yet;  despite this;  but even so;  but even then;  however;  nevertheless
 straight (ahead);  direct;  upright;  straightforward;  honest;  frank
 to perceive;  to sense;  to take in;  to grasp;  to feel
 (not) anything;  (nothing) at all;  (not) any
 sweetly (smiling);  broadly (grinning)
 to match (rhythm, speed, etc.);  to join together;  to unite;  to face;  to be opposite (someone);  to compare;  to check with
 (some) more;  even more;  longer;  further
 to buy;  to purchase;  to value;  to have a high opinion;  to stir;  to provoke
 premature;  untimely (e.g. death);  early
 flatly rejecting;  curtly refusing;  beating easily;  defeating handily;  a kick
 dining room;  dining hall;  cafeteria;  restaurant;  eatery;  snack bar
 to be at wits' end;  to be greatly perplexed;  to be troubled
 consultation;  discussion;  discussing;  asking (somebody) for advice
 bad (taste);  unpalatable;  poor;  unskillful;  ugly;  unattractive
 to stop;  to turn off;  to park;  to prevent;  to suppress (a cough);  to stop (someone from doing something);  to dissuade
 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)
 something;  something or other;  so-and-so;  somehow;  anyhow;  one way or another
 to put;  to place;  to leave (behind);  to establish (an organization, a facility, a position, etc.);  to set up;  to appoint (someone to a certain position);  to hire
 remnant;  residue;  remaining;  left-over
 in one go;  in one gulp;  in one breath;  immediately;  instantly;  right away
 to fill in (field, entry, etc.);  to fill out (form);  to post a message (e.g. on a bulletin-board);  to store;  to write (data);  to flash
 this and that;  various things
 calling on someone who is ill;  enquiry;  inquiry
 to be surprised;  to be amazed;  to be frightened;  surprise (e.g. surprise party)
 to begin to open;  to come out;  to smile broadly;  to come apart at the seams (clothes)