Question

Fill in the blank with the most appropriate word.
He's interested _______ flying.

• A. at
• B. in
• C. on
• D. with

Answer 1

Answer: (B)

in

Here, 'in' is correct because it is used to show somebody’s job or profession or interest. Here, it is flying.
'At' is incorrect because it is used to say where something/somebody is or where something happens.
'On' is incorrect because it implies in or into a position covering, touching or forming part of a surface.
'With' is incorrect because it implies in the company or presence of somebody/something.