Word Formation Nature – Exercise show special characters display incorrect answers Exercises Write the missing word. Use pra-/-ar-/-er-. human = homohumanity = rain = pluvorain drop = stair = ŝtupostaircase = grandmother = avinogreat-grandmother = leaf = foliofoliage = young person = junuloyouth = human = homoprehistoric man = bird = birdoflock of birds = money = monochange/coin = key = klavokeyboard = snow = neĝosnowflake = relative = parencorelatives = grandchildren = nepogreat-grandchildren = word = vortovocabulary/dictionary = time = tempoprehistoric time = VocabularySyllables for Word FormationNatureWord Formation Nature – Exercise