Choose the right variant. 1) you have to be worried about/interested in helping people if you want to be a firefighters. 2)david wasn't very proud of/good at failing his exams. 3) you shouldn't get understend in/upset about not getting an interview.

1) You have to be interested in helping people if you want to be a firefighters.
2) David wasn't very proud of failing his exams.
3) You shouldn't get upset about not getting an interview.