He attacked the enemy's position using a grenade launcher.

He is world-famous as an astronomer.

Sai is my best friend.

This is the best restaurant.

He encouraged us to muster courage.

He took out a loan to pay for his college tuition.

I have to retake the exam.

"Ah, how beautiful!" He exclaimed in admiration.

He built a fort on top of the mountain.

My wife is good at cooking.