Help Marcus describe his rather unusual college roommate by dragging the correct prepositions into his text message.

My new roommate is very good at playing the guitar, but he is completely afraid of tiny spiders. Strangely, he is only interested in studying alien mysteries instead of doing his homework!

My new roommate is very good at playing the guitar.

We use good at (and bad at) to talk about someone's abilities and skills.

...but he is completely afraid of tiny spiders.

The adjective afraid is always followed by the preposition of when mentioning the thing that causes fear.

Strangely, he is only interested in studying alien mysteries instead of doing his homework!

When someone wants to know more about a subject, we say they are interested in it.