He said he knew nothing about the matter.

Please hand this dossier over to him.

A day has 24 hours.

He ate one apple.

The Tiananmen Square incident is an important event in Chinese history.

The Marco Polo Bridge Incident was the trigger for the Sino-Japanese War.

He got involved in a love affair.

This is the most difficult case I have ever faced.

You need to meet all the terms of this contract.

It is important for each person to fulfill their role.