I think it would be 'After drumming on his desk, Stewart was disciplined by Mrs. Hobson for distracting students from their exams.'
The correct answer would be loosened because a participle is used as for an adjective or adverb for ex. Billy broke his arm playing ball. the participle is broke.
i hope this helps <span />
Why do you think that. i personally think the U.N. has been extremely helpful to america
a comet struck and a chain of problems happened which wiped yhe dinosaurs out
