This is a test of commonsense. Complete the next sentence:

How to tame your gerbils
Understand the temperament of gerbils.
Before you can tame a gerbil, it's important to learn about their temperament. While they are loving animals, they can also be shy and aggressive if they are scared.
Understanding your gerbil can help you successfully tame it. Gerbils are naturally shy but are social, inquisitive, and can bond well with their human family.