"Do you want to have a meal? Take a bath? Or choose me?" she said jokingly.

He was hiding the fact that he was an illegitimate child.

He is an expert in ethology.

We went on a trip using the expressway.

We should always remember the power of Kannon in difficult times.

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.