Page 30 ex. 1
Printed books advantages:
- Not read books on a screen

Printed books disadvantages:
- Books are expensive

E-books advantages:
- E-books are cheaper
- When you go on holiday you don’t have to pack heavy books

E-books disadvantages:
- E-books don’t let you the feel of a real book in hands

Page 30 ex. 2
- Joe Jacobson was a researcher for the Massachusetts Institute of Technology. He had a “Eureka!” moment beacuse he imagined an eletronic book that he colud download ant time he wanted.

Page 30 ex. 3
1. was working
2. was lying
3. finished

Page 30 ex. 4
2. felt
3. was hearing
4. was calling
5. replied
6. was going
7. was opening
8. was looking
9. was driving
10. got
11. were
12. was reaching
13. was putting
14. was

Page 30 ex. 5
I’d like to continue David Copperfield because I heard many people tell me that Charles Dickens is very good to write.

Page 30 ex. 6
1. were studying - met
2. was crashing - did
3. was watching - got
4. was raining - woke up
5. was burning - made
6. was texting - walked

Page 30 ex. 7
A: Was your computer crashing when you did your homework?
B: Yes, it was.
A: Were you watching tv when your mum got home yesterday?
B: Yes, I was.
A: Was it raining when you woke up this morning?
B: No, it wasn’t.
A: Were you burning yourself when you made breakfast?
B: No, I wasn’t.
A: Was a friend texting you when you walked to school?
B: Yes, he was.

Page 30 ex. 1
A chemistry
B archaeology
C ecology
D geology
E marine biology
F physics

Page 30 ex. 2
1. Photo c
2. Photo d

Page 30 ex. 3
1. a chemist
2. an ecologist
3. a geologist
4. a physicist
5. an archaeologist
6. a marine biologist

Page 30 ex. 4
- Speaker 1: B
- Speaker 2: F
- Speaker 3: A
- Speaker 4: D
- Speaker 5: C

Page 30 ex. 5
1. evidence
2. discoveries / cures
3. experiment
4. hours
5. research

Page 30 ex. 6
2. biologist
3. chemistry
4. ecologist
5. geologist
6. mathematician
7. physic
8. scientist