Pag. 28 es. 1

refrigerator, antibiotics and mobile phone

es. 2

refrigeratorantibiotics and mobile phone

es. 3

1. 2005
2. 1971
3. 2001
4. 1984
5. 1991
6. 1990
7. 1995
8. 2006

es. 4

1. T
2. T
3. F
4. T
5. F
6. T
7. F
8. T

es. 5

3. Internet server
4. keyboard
7. search engine
8. social network
9. text message
10. username
11. website

es. 6

1. text
2. user
3. desktop
4. engine
5. social
6. server

es. 7

2. download
3. follow
4. go
5. open
6. visit

es. 8

1. go - check my discord account
2. opened - my English homework
3. click on - the YouTube one
4. follow - lilmonix3
5. visit - MARILENA BELTRAMINI
6. downloaded - party favor

es. 9

1. V
2. X
3. V
4. V
5. V
6. V

es. 10

2. hang up
3. log on
4. scroll down
5. scroll up
6. switch on

Pag. 32 es. 1

1. D
2. E
3. C
4. A
5. B

es. 2

1. It was flying to the moon
2. There has been an explosion
3. The NASA engineers and the Apollo 13 crew did
4. 6 days

es. 3

1. B
2. C
3. B
4. C
5. A
6. D

es. 4

2. came up with
3. figure out
4. carrying out
5. breath a sigh of relief
6. running out
7. cheer
8. on duty

es. 5

1. running out
2. carried out
3. hatch
4. on duty
5. breathed a sigh of relief
6. cheered
7. came up

es. 6

I agree with the third one: I think that it's worth spending some money to get rid of important questions like these.

es. 7

2. fix a problem
3. follow events
4. get crazy
5. go home
6. raise your hands