Q: the 21.th virtually all the adult kittiwakes left the breeding grounds and let their youngs alone back.

A: The 21.th virtually all the adult kittiwakes left the breeding grounds and let their youngs alone back.
++++++++
Q: sometimes there's possibility to stay at a boarding school, though that is usually more expensive.

A: Sometimes there's possibility to stay at a boarding school, though that is usually more expensive.
++++++++
Q: tractor and waggons (48)

A:
Tractor and waggons (48)
++++++++