Unit 9:
against, beach, damage, discover
emotion, fix, frank, identify, island
ocean, perhaps, pleasant, prevent
rock, save, step, still, taste, wave
Unit 10:
benefit, certain, chance, effect
essential, far, focus, function
primary, proud, remain, rest
separate, site, tail, trouble
Unit 11:
anymore, asleep, berry, collect
compete, conversation,creative
decision, either, forest,ground
introduce,marry, preapre, sail
serious,spend,strange,truth,wake
Unit 12:
alone, apartment, article, artist
attitude, compare, jundge, magazine
material, meal, method, neighbor
professional, profit, quality, shape
space, stair, symbol