It's impossible to finish this quickly.

He learned about the life of the Eta in his history class.

He finished all his homework yesterday.

Ahem, let me start my presentation.

In Japanese grammar, we use the causative form to make expressions that make others do something.

He couldn't help but pass the exam.

We decided to execute a roller operation to solve this problem.

He pushed the door open with his hand.

He has a unique character.

Koushi is my best friend.