Select the most appropriate option to improve the bold part of the sentence.
She is good in mathematics.
Show answer & explanation
Correct answer: A
Explanation
Correct Answer: good at
Explanation
• The adjective good takes the preposition at when referring to skill, competence, or proficiency in a subject, sport, or activity.
• Phrases like good at mathematics, bad at sports, and great at painting are standard prepositional collocations.
• Example: Rohan is remarkably good at solving logical puzzles.