my mom was already preoccupied on the phone,so she couldn't make
me cookies
Preoccupied is used in a sentence as a verb. When someone or
something is preoccupied, it means they are either already
occupied(busy), or absorbed in their thoughts and what they are
doing.
Here is an example sentence using the second definition: She was
preoccupied with studying for her test.
This is a sentence using the first definition: The man was
preoccupied before I came.
I .