This problem cannot be solved unless both sides cooperate.

I dry the laundry every day.

My younger brother caught smallpox.

This school was founded in 1900.

He founded a new company.

The operator is operating the machine.

I have trained in the Zen monastery.

This stratum is thought to be millions of years old.

The police are working day and night to eradicate crime in this area.

We need to eradicate this disease.