He chose to self-determine his own life.

I want to go to the national art museum.

He has studied abroad in Russia.

Brazil is known as one of the emerging countries.

He felt labored breathing and immediately contacted a doctor.

The teacher wrote the problem on the blackboard.

In order to solve this unsettled question, everyone's cooperation is necessary.

The children were playing rock paper scissors in the park.

Let's play rock-paper-scissors during today's lunch break.

The Jinan incident of 1928 was an important event in Chinese history.