Mr. Haito is my best friend.

Mr. Tougin is my best friend.

Problems about arithmetic series often appear in math tests.

I was bewildered by his sudden proposal.

He was perplexed by the problem.

A footrace was held at the school's sports festival.

Initially, I was against the plan, but now I understand its value.

Pop, what are you making today?

He conducted an experiment using an arc lamp.

We set up camp at the eastern tip of the island.