He is working as an agent for the Central Intelligence Agency.

He is an expert in ethology.

We went on a trip using the expressway.

This anime, moar!

She's always a goody two shoes, and is well-liked by her teachers.

He is our class representative.

He is conducting research on superconductivity.

Arthropods are a large group of animals that include insects, spiders, shrimp, and crabs.

Homophonic words are difficult, aren't they?

He is majoring in zoology at university.