Answer:
Hearing
Explanation:
When someones gargles you usually know they do because of you hearing it
Easy..
A simile uses either the words "like" or "as" to compare anything...
My grandma ran to the front of the line, like a cheetah, for some tacos. (Very realistic)
and
Garfield is as fast as my parrot!
It's just comparing things..
The simple predicate is gave.
You can use it for research