question: placing an item in your shopping basket does not guarantee your right to purchase that item.
Capitalize this past sentence correctly.
A: Placing an item in your Shopping basket does not guarantee your right to purchase that item.

question: our dogs (and puppies) live inside the house as a part of the family and closely together
Capitalize this past sentence correctly.
A: Our dogs (and puppies) live inside the house as a part of the family and closely together

question: onsdag den 20. december 2017
Capitalize this past sentence correctly.
A: onsdag den 20. December 2017