He found out the truth and was surprised.

He is really knowledgeable and always teaches us new information.

Assyria was a powerful ancient empire.

I have been to Kunashir.

The sand in this desert is mainly composed of silica.

You, what are you doing?

That person is my friend.

You'll understand if you listen, my plan is the best choice.

I'm in the middle of a conversation, so please wait a moment.

It is important for each person to fulfill their role.