Select the most appropriate option to fill in the blank.
He is good _________ mathematics.
Show answer & explanation
Correct answer: D
Explanation
In English, the adjective "good" is followed by the preposition "at" when referring to a person's skill, ability, or proficiency in a particular subject or activity.
This rule applies to many academic subjects and skills, such as being "good at English," "good at sports," or "good at drawing." The most appropriate option to fill in the blank is at.
The completed sentence is: "He is good at mathematics."