4000
1
ansWEr KEy
Unit 1
eXerCises
A
1. camera
2. weather
3. month
4. agree
5. travel
6. invite
7. typical 8. August
9. capital 10. boat
B
1. b, c
2. a, c
3. a, d
4. c, d
5. b, d
C
1. invite
2. duck
3. travel
4. breakfast
5. week
reAding Comprehension
1. d
2. b
3. c
4. b
5. Y e s. The author tells the readers they will love
the Amalfi Coast and uses words like amazing, beautiful, and interesting to describe it.
Unit 2
eXerCises
A
1. a, b
2. a, d
3. b, d
4. c, d
5. a, d
B
1. create
2. adventure
3. approach
4. secret
5. project
C
1. a
2. b
3. b
4. b
5. a
6. a
7. b
8. a
9. b 10. a
reAding Comprehension
1. c
2. d
3. d
4. a
5. Mia and Liz went into the laboratory when Mia’s father left the laboratory to eat dinner.
Unit 3
eXerCises
A
1. c
2. a
3. d
4. b
5. c
6. d
7. b
8. d
9. a 10. c
B
1. c
2. c
3. b
4. d
5. b
C
1. ever / Describe
2. chart / photograph
3. planet / shape
4. solve / fail
5. Several / view
reAding Comprehension
1. b
2. d
3. d
4. b
5. He saw the Earth and other planets.
Unit 4
eXerCises
A
1. spread, n.
2. content, adj.
3. shake, v.
4. expect, v.
5. avoid, v.
B
1. a
2. a
3. b
4. b
5. b
C
1. a
2. b
3. a
4. a
5. b
6. a
7. b
8. b
9. a 10. a
reAding Comprehension
1. a
2. c
3. b
4. d
5. They said the bell made people avoid him.
Unit 5
eXerCises
A
1. c
2. b
3. d
4. a
5. b
B
1. adult / doctor
2. often / during
3. bad / fun
4. bike / football
5. life / increase
C
1. a
2. b
3. b
4. a
5. a
D
1. increase, v.
2. active, adj.
3. football, n.
4. kilometer, n.
5. during, prep.
reAding Comprehension
1. b
2. c
3. b
4. d
5. The three sports in the Ironman are swimming, biking, and running.
Unit 6
eXerCises
A
1. a
2. d
3. a
4. c
5. b
B
1. b
2. d
3. b
4. c
5. c
6. d
7. d
8. c
9. b 10. a
C
1. attributes / disgust
2. bilingual / foreign
3. dashed / apart
4. vague / natural
5. fashionable / Nowadays
6. participant / tense
7. mirror / ritual
8. totally / spoken
9. sport / gulf
10. surprised / completely reAding Comprehension
1. d
2. a
3. b
4. d
5.  T hat they can be best friends, but have different interests and not have to be together all the time.
Unit 7
eXerCises
A
1. c
2. a
3. a
4. b
5. b
B
1. harm
2. famous
3. allowed
4. claim
5. divided
C
1. a
2. b
3. b
4. b
5. a
6. a
7. a
8. b
9. b 10. b
reAding Comprehension
1. b
2. a
3. a
4. d
5.  H e would have to announce who would become king.
Unit 8
eXerCises
A
1. familiar
2. necessary
3. theory
4. purpose
5. encourage
6. accept
7. chase  8. contrast
9. single
B
1. c
2. a
3. d
4. a
5. b
C
1. b
2. a
3. a
4. b
5. a
reAding Comprehension
1. b
2. c
3. c
4. d
5. She arranged her hair and wore nice clothes.
Unit 9
eXerCises
A
1. d
2. a
3. c
4. c
5. a
B
1. b, c
2. a, d
3. b, d
4. b, d
5. a, b
C
1. help
2. animal
3. medical
4. depend
5. horse
6. service
7. leg 8. rabbit
9. friend 10. dog
reAding Comprehension
1. d
2. b
3. b
4. c
5.  S ervice dogs are trained to bark and get help.
Unit 10
eXerCises
A
1. essential
2. benefit
3. trouble
4. certain
5. function
6. site
7. image  8. separate
9. remain 10. tail
B
1. effect / benefit
2. immediate / primary
3. proud / rested
4. far / separate
5. guard / remain
C
1. a
2. b
3. a
4. a
5. a reAding Comprehension
1. c
2. a
3. c
4. b
5.  H e only rested a few eyes at a time. The others stayed awake.
Unit 11
eXerCises
A
1. b
2. b
3. a
4. b
5. a
B
1. a
2. a
3. b
4. b
5. a
C
1. battery
2. nature
3. think
4. develop
5. advertise
6. glass
7. fact 8. aware
9. city 10. plastic
reAding Comprehension
1. d
2. b
3. a
4. c
5.  T he governments are supportive and a lot of money is put into recycling programs.
Unit 12
eXerCises
A
1. c
2. b
3. a
4. c
5. c
B
1. professional
2. compared
3. attitude
4. magazine
5. neighbor
C
1. b
2. a
3. b
4. a
5. a
6. b
7. a
8. a
9. b 10. b
reAding Comprehension
1. a
2. c
3. b
4. b
5.  H is friends felt excited about seeing his painting.
Unit 13
eXerCises
A
1. c
2. a
3. c
4. b
5. b
6. a
7. d
8. a
9. c 10. c B
1. salary
2. temporary
3. embarrassed
4. invested
5. former
6. borrow
7. treasure
C
1. practical
words
2. borrow
3. downtown
4. urge
5. appeal
reAding Comprehension
1. a
2. a
3. c
4. d
5. He urged Peter to take the money.
Unit 14
eXerCises
A
1. exam
2. magical
3. technology
4. outline
5. descriptions
B
1. a
2. b
3. a
4. a
5. b C
1. a
2. b
3. b
4. a
5. a
6. b
7. a
8. a
9. b 10. a reAding Comprehension
1. d
2. b
3. c
4. a
5. Her parents made her join the basketball team.
Unit 15
eXerCises
A
1. b
2. c
3. a
4. b
5. d
6. a
7. b
8. c
9. d 10. a
B
1. race
2. across
3. observed
4. respond
5. risk
C
1. a
2. a
3. b
reAding Comprehension
1. a
2. d
3. c
4. b
5.  T he rabbit saw the turtle almost at the finish line.
Unit 16
eXerCises
A
1. wear, exchange
2. university, community
3. January, December
4. book, art
5. home, dinner
6. family, clothes
7. year, together
B
1. red
2. year
3. start
4. green
5. from
C
1. d
2. c
3. e
4. b
5. a

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