He was behaving as if he was crazy.

This road is very narrow.

I was amazed at his new idea.

He crossed the border and fled to the neighboring country.

The Federal Republic of Yugoslavia was once an existing nation.

The Democratic Republic of the Congo is located in the central part of the African continent.

I do laundry using synthetic detergent.

Tierra del Fuego is located at the southernmost tip of South America.

Once you're ready, let's go!

The development of fusion reactors could potentially be the key to solving future energy problems.