whether(из двух); where(((to or in) the place) to or in which); whom(used to refer to a person or people mentioned previously, to distinguish him or them from others • able to be omitted or replaced b; Today I met some friends (whom/that) I hadn't seen for ages; This is the man to whom I gave it; This is the man (whom/who/that) I gave it to)
who(used to refer to a person or people mentioned previously to distinguish him or them from others • used as the subject of a verb: usually replaceable b; A doctor is a person who looks after people's health); what; some; as(this is the same book as I lost – это такая же книга, как та, что я потерял); such; that is(в качестве уточнения • Иван. Который слесарь.GomerX); which(used to refer to a thing or things mentioned previously to distinguish it or them from others • Which (colour) do you like best?; Which route will you travel by?; At which station should I change trains?; Which of the two girls do you like better?; Tell me which books you would like; Let me know which train you'll be arriving on; I can't decide which to choose; able to be replaced b; This is the book (which/that) you wanted; A scalpel is a type of knife which/that is used by surgeons; The chair (which/that) you are sitting on is broken; The documents for which they were searching have been recovered); that(used to refer to a person, thing etc. mentioned in a preceding clause in order to distinguish it from others); whichever(из двух); gen. case whose; when
