He thinks his knowledge is omnipotent.

Manju is my best friend.

It's difficult to collect character tiles in mahjong.

He likes to take a walk in the park at dusk.

I am interested in the culture of China.

In my school, there are national language classes every day.

He was elected president of the republic.

He is studying about the ancient kingdom.

He thoroughly researched the history of that nation.

I am planning to go to South Korea next week.