Answer: usual, annoyed, crowded, backed away fearfully, without thinking, supported, frightened, large group, distracted, uninterested
Explanation:
Customary means usual
"It is customary we wash our hands before we eat
Exasperated means annoyed
"She showed an exasperated expression after her son kept asking if they were there yet"
Congested means crowded
"The highway was so congested we barely moved anywhere"
Cowered means backed away fearfully
"The dog cowered at the sight of the vet"
Impulsively means without thinking
"He bought things on the internet impulsively so he bought things he didn't need"
Sustained means supported
"The thought sustained him through the years"
Intimidated means frightened
"She was so intimidated by his loud voice"
Throng means large group
"We had to push past the throng of people"
Preoccupied means distracted
"She became preoccupied with her phone to continue on homework"
Altruistic means uninterested
"Her act was so altruistic"