Question

(Threw, Through, Thorough) the years, there have always been arguments about which are the better pets: dogs or cats.

Answer 1

Through

Step-by-step explanation:

"Through" is the grammatically correct answer seeing as the other two options have completely different usages.

Threw: To throw or launch an object of some kind.

Thorough: To be extremely efficient and/or effective in doing something.

Answer 2

The correct word to use us Through.