... made b organized c deleted d undergone 27 a distributed b parachuted c overused d improved 28 a health b healthy c healthful d healthiness 29 a contribution b collaboration c consumption d production ... (integers) that are formed by the digits 0, 1, 2, 3, 4, 5, 6, 7, 8, and and by the combinations of them For example, 247 – two hundred and forty seven - is a number formed by three digits Parts of numbers ... labor-saving devices / women / free time KEYS I a B d a c II a a 8 .d b 10 c 11 b 12 a 13 d 14 d 15 .d III 16 Farming 19 weak 22 famous 25 active 17 Illness 20 solution 23 growth 18 childhood 21 education...