Select the most appropriate option to fill in the blank.
He is interested ________ learning foreign languages.
Show answer & explanation
Correct answer: B
Explanation
Adjective + Preposition: In English, the adjective interested is almost always followed by the preposition in when describing a subject or activity that someone cares about.
Gerund Form: When a verb follows "interested in," it must be in the gerund form (ending in -ing), such as "learning."
The most appropriate option to fill in the blank is ‘in’.
The complete sentence is: "He is interested in learning foreign languages."