Workers of the world, unite, the time has come to show our strength.

Mr. Danno is a mathematics teacher.

Sentarou fell asleep while watching TV.

We are implementing a social distancing strategy to prevent the spread of the new coronavirus.

This ancient proverb, 'know the other side and yourself, and you will not be in danger in a hundred battles', teaches us the importance of understanding ourselves and others.

Please teach me how to calculate the area of this circular sector.

I went to the stationery store to buy new letter paper.

Please stop inquiring about his private life.

Mou is a common surname in China.

Please tell me the International Standard Book Number of this book.