Yesterday, our country's airspace was violated by the enemy nation.

North Korea has violated our country's airspace again.

We are planning to attend the meeting tomorrow.

He is devising a strategy against the enemy nation.

He is suspected of being a spy from an enemy country.

This festival is held every year.

Yesterday, I bought a new book.

Yesterday, I bought a new book.

Last night, I went to see a movie with my friends.

The airplane violated our country's airspace without permission.