Unit 01
atmosphere, blossom, caterpillar, climate, countryside, creature, greenhouse, harvest, horizon, insect, landmark, liquid, outdoor, pleasant, pollute, scenery, settle, sight, typhoon, underground

Unit 02
amaze, anger, anxious, ashamed, bother, cheerful, curious, dull, foolish, gentle, grateful, happiness, personality, reasonable, regret, shock, uneasy, unhappy, useless, wisdom

Unit 03
active, appointment, cancer, cause, chemical, deaf, death, digest, drug, experiment, function, growth, harm, hunger, lively, medical, nutrition, physical, recover, relax

Unit 04
advertise, allowance, benefit, bet, billion, budget, business, capital, charge, expense, gain, income, opportunity, period, poverty, quarter, resource, salary, shopkeeper, support

Unit 05
abroad, available, border, castle, coast, comfort, cost, cultural, encounter, fortunate, journey, local, native, nearby, observe, passenger, preserve, remain, sightseeing, village
Review 01

Unit 06
admire, apologize, argue, awkward, behave, blame, community, conversation, disagree, frankly, generous, ignore, inspire, lifetime, marry, passion, professional, relationship, responsible, worried

Unit 07
achieve, average, cheat, clever, compete, concentrate, excellent, genius, information, progress, pronounce, purpose, research, review, solution, subtract, system, teenager, textbook, total

Unit 08
architect, astronaut, athlete, author, compose, conductor, dedication, diligent, engineer, equipment, focus, influence, intelligent, invent, manage, newspaper, organize, performance, role, successful

Unit 09
animation, attractive, audience, background, cancel, celebration, choir, decorate, exhibit, hobby, mystery, novel, pretend, probably, publish, realistic, script, situation, technology, vivid

Unit 10
aim, arrow, attack, campaign, capture, command, damage, destroy, empire, guard,
independence, invade, kill, mission, obstacle, risk, shoot, soldier, victory, violent
Review 02

Unit 11
artificial, century, clearly, electric, extreme, forecast, imagine, increase, incredible, laboratory, microwave, modern, operation, satellite, scientific, spaceship, telescope, transport, vehicle, vision

Unit 12
accident, amount, arrest, bad, bite, bullet, careless, disabled, earthquake, emergency, hit, mess, panic, paralyze, prison, scare, scream, tragedy, unbelievable, worse

Unit 13
able, alive, cough, fat, freeze, injury, miracle, overweight, pimple, poison, proper, provide, rapidly, relieve, sneeze, soap, sunlight, tissue, wound, youth

Unit 14
actual, appear, brief, deeply, differ, ease, elder, equal, hug, nickname, normal, opposite, pair, patient, personal, private, realize, respect, similar, terrific

Unit 15
avenue, construction, describe, downstairs, drawer, exit, front, furniture, handkerchief,
heritage, item, niece, property, repair, spare, supper, swing, usual, warm, within
Review 03

Unit 16
absorb, aloud, aware, beauty, bitter, calm, clap, dirty, feather, flow, fur, heat, nod, pour,
quality, raw, rub, smooth, squeeze, unusual

Unit 17
adapt, affect, ancient, common, conclusion, debate, detail, discover, discuss, documentary, education, expert, figure, lecture, principal, riddle, scholar, suppose, survey, valuable

Unit 18
apply, appoint, article, cash, congratulate, customer, department, disadvantage, goods, interview, law, practical, presentation, regular, reply, separate, serve, supply, tax, wealthy

Unit 19
allow, chase, compare, custom, encourage, exist, fact, generally, host, include, instruct, list, nearly, notice, particular, safety, since, typical, unlike, weekly

Unit 20
adopt, attempt, chief, chore, determine, develop, disappear, impress, inform, memorize, method, owner, precious, produce, recognize, reflect, spot, survive, tool, value
Review 04

Unit 21
appreciate, backward, concern, connect, consider, demand, disappoint, emotion, hesitate, insult, measure, option, persuade, promise, relative, scene, selfish, shy, sincere, whisper

Unit 22
area, base, beg, bottom, continent, crowd, distance, divide, familiar, fence, ideal, illegal, official, population, president, slave, species, tribe, unit, worth

Unit 23
bare, beard, cell, chest, elbow, exactly, footprint, huge, imitate, infect, lower, lung, organic, position, power, race, stomach, thumb, whole

Unit 24
attract, cart, continue, display, electronic, flavor, found, gift, jewel, mail, metal, object, order, owe, pack, refuse, return, sample, steal, various

Unit 25
behind, bubble, certain, code, dare, enemy, escape, fortunately, guess, handle, joy, length, magic, monster, original, perform, release, source, treasure, war
Review 05

Unit 26
blend, cave, dew, dive, entrance, flight, grain, ground, harbor, north, planet, polar, rare, root, seafood, shell, shore, southern, tomb, universe

Unit 27
depend, die, emerge, except, fear, force, god, hide, justice, liberty, movement, path, plenty, poor, proverb, rent, sense, stage, sudden, tide

Unit 28
bump, concrete, crack, dirt, evidence, false, form, humorous, indoor, joke, lunar, male,
medium, positive, royal, sticky, terribly, western, wood

Unit 29
bow, direct, disturb, expect, grab, hardly, knock, lock, neat, nowadays, obey, portrait, prefer, senior, shelter, shout, suggest, tend, vet, wrap

Unit 30
bill, cast, consonant, elect, envelope, fare, idiom, march, motto, offer, prevent, prove, rate, scale, score, section, site, skip, staff, vowel
Review 06