Select the grammatically correct option to substitute the underlined segment in the given sentence. If there is no need to substitute it, select 'No improvement'.
The engineers got off to repair the malfunctioning sensor after they noticed it was not tracking movement accurately.
Show answer & explanation
Correct answer: B
Explanation
Correct Answer: set about repairing
Explanation:
• The phrasal verb set about means to start doing something or begin tackling a task.
• Because about functions as a preposition here, it must be followed by a gerund (verb + -ing), making set about repairing the correct grammatical structure.
• The phrase get off means to leave, depart, or escape punishment, which does not fit the intended meaning of starting a task.
Example: As soon as the inspection was over, the crew set about fixing the damaged tracks.