He is suffering from depression.

Naruka is my best friend.

He goes to the gym frequently.

Shigeru's birthday is in February.

Thanks to your assistance, my project was successful.

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.

We went on a trip using the highway.