Interchange2 WorkbookAnswers

Exercise 2 
1. A: When did people travel by horse and carriage?
B: About 100 years ago.
2. A: When might doctors find a cure for the fl u?
B: In the next 50 years.
3. A: When did the first man go to the moon?
B: About 50 years ago.
4. A: When is everyone going to buy everything online?
B: Soon.
Exercise 3 
2. In the past, people used to collect CDs. Nowadays, they 
listen to music online.
3. A few years ago, people used to use desktop computers. 
Today, they use tablets.
4. Fifty years ago, people used to wear business suits to 
work. These days, they wear casual clothes.
5. Nowadays, people drive their own cars. Sometime in the 
future, they will ride in cars that drive themselves.
Exercise 4 
A 
Answers will vary. Possible answer:
It changed from jazz to swing to rock n roll. Rock n roll 
changed into disco, punk, and hip-hop.
B 
Answers will vary.
Exercise 5 
1. A: What if I get in shape this summer?
B: You might be able to come rock climbing with me.
2. A: What will happen if I stop exercising?
B: Well, you might gain weight.
3. A: What if I get a better job?
B: You ll be able to buy some new clothes.
4. A: What will happen if I don t get a summer job?
B: You probably won t have enough money for your 
school expenses. 
Exercise 6 
A 
feel 
get 
join 
spend
energetic 
a cold 
a group 
money
relaxed 
married 
a gym 
time
B 
Answers will vary.
Exercise 7 
Answers will vary. Possible answers:
2. if I eat more fruits and vegetables.
3. I ll be in better shape.
4. I won t get into a good college.
5. if I drink less coffee.
6. if I get a good job.
Exercise 8 
A 
Noun
Adjective
Noun
Adjective
energy
energetic
medicine
medical
environment environmental
success
successful
health
healthy
B 
2. There are a lot of environmental problems in my country. 
There s too much air pollution, and the rivers are dirty.
3. My health is not as good as it used to be. So, I ve 
decided to eat better food and go swimming every day.
4. My party was a great success. I think I might have another 
one soon!
5. If I start exercising more often, I might have more energy.
Exercise 9 
Answers will vary. Possible answers:
2. If I go on a diet, I may be able to lose weight.
3. In the future, few people will use cash to buy things.
4. If I get a better job, I ll be able to buy an apartment.
5. I ll arrive at noon.
Exercise 10 
Answers will vary.
T-358
Workbook answer key
T-192

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T-359
Workbook answer key
T-193
10 I like working with people.
Exercise 1 
1. A: I enjoy working in sales.
B: So do I.
2. A: I like working the night shift.
B: Well, I don t.
3. A: I can t stand getting to work late.
B: Neither can I.
4. A: I m interested in using my language skills.
B: So am I.
Exercise 2 
2. Takiko is a novelist. He writes all his books by hand 
because he hates using a laptop.
3. Sarah usually works alone all day, but she enjoys working 
with a team, too.
4. Jennifer works for a large company, but she s interested in 
starting her own business.
5. Pablo has to use Portuguese and Japanese at work, but 
he s not very good at learning languages.
6. Annie has to drive to work every day, but she doesn t like 
commuting.