Please, level 8 is impossible!

Could some one please help me on level 8? Questions are:

Above all, leathers are sensitive to:

• the cold
  
• sweating
  
• the heat
  
• water
  

2 - What is top stitching used for?

• to prepare the leather to be sewn
  
• nothing
  
• to reinforce the stitches
  

3 - Check all the elements of the saddle:

• the blades
  
• the straps
  
• the cantle
  
• the flaps
  
• the sweat flaps
  

4 - In each molting period, horses are more tired and vulnerable than usually.

• true
  
• false
  
• horses don't molt
  

5 - The saddle's skeleton is named:

• the tree
  
• the shaft
  
• the frame
  

6 - The equipment (saddle + bridle) must be thoroughly cleaned and lubricated every:

• year
  
• month
  
• fortnight
  
• day
  

7 - Check all the right answers:

• Horses are animals built for running away.
  
• Horses are very aggressive animals. This is why they have been used a lot in battles
  
• Horses are gregarious animals
  
• Horses are solitary animals.
  

8 - The harnessing leather is normally looked after:

• with glycerine soap
  
• with cleaning product
  
• with general purpose soap
  

9 - What is a tanner?

• a rounded blade knife
  
• a small bit of wood used to make a collar harness
  
• the person who prepares the leathers for the harness maker
  

10 - The harness makes saddles, bridles, harnesses - a more sophisticated job than the saddler

• true
  
• false
  

The ones that are checked off are the only ones i know...i think:oops: