Which word goes with "stuck in a place"?

The excerpt above is from page 21 of harry potter and the sorcerers stone by j.k rowling. which passage represents a

Which sentence is written using formal language? a) erin has a crucial appointment early monday morning. b) that was a real bogus tale charlie told the teacher. c) let me have a sneak-peak or i am simply gonna explode. eliminate d) i do not think tim will be here today; he's playing hookie.

Her brother joined the army before he finished college. identify the adverb clause in the sentence. a) finished college b) her brother joined c) brother joined the army d) before he finished college