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Basic science Date processing Sustain the ecological system Inventions and discoveries Maintain the rate of progress 2 Choose the write variant:    1 the least expensive - b    2 the fastest - c    3 a lot better - b     4 comfortable - c    5 the smarter -b             3   1- a 2- a 3- a/b 4- b             4 1 turning 2 to get 3 staying 4 to read 5 telling 6 visiting               5 1 had done 2 phoned 3 had written........had gone 4 buys 5 wouldn't have got