Exercicis:

ex 5:

ex 1:

1 microphone

2 printer 

3 speakers

4 projector 

5 headset

6 scanner

7 gaming controller 

ex 6:

1 touch screen

2 remote control

3 USB charger

4 barcode scanner

5 flash drive 

ex 7:

2-a

4-b

1-c

6-d

3-e

7-f

5-g

ex 8:

1 Obsolete

2 Touch screeen

3 Headsets

4 Microphones

5 Printer

6 Broken

7 Reorder