1. uses hydraulics-concrete pump has tracks-dump truck

Exercise 2

1.uses hydraulics—concrete pump
2.has tracks—dump truck
3.uses stabilisers—scaffolding
4.lift loads—crane
5.digs trenches—excavator
6.drives piles into the ground—drilling machine
7.breaks things—puncher

Exercise 1

1. 
   Bulldozer-buldozer
   
2. 
   truck crane-avtokran
   
3. 
   concrete pump-betononasos
   
4. 
   scaffolding-lesa(iskala)
   
5. 
   excavator-ekskovator
   
6. 
   puncher-perforator
   
7. 
   truck crane-avtokran
   
8. 
   dump truck-samosval
   
9. 
   crane-drilling machine
   

Exercise 4

1 This machine is for driving piles into the soil.
2 This machine has a bucket which is used to scoop soil out of the ground.
3 This machine can lift heavy loads high in the air.
4 You use this machine to move large amounts of earth.
5 This machine makes electricity from petrol.
6 This machine is used for transporting concrete to high parts of a construction site.
7 This machine is used to transport people to high parts of a construction site