He is studying old written materials.

His inherent nature became clear.

The state control in response to the emergency has been strengthened.

The government began to control the actions of citizens on the grounds of an emergency.

The stability of this bridge is very high.

He is suffering from a subacute illness.

My cost of living is increasing every month.

I enjoyed a picnic under the clear sky.

His work is overflowing with life force.

This area is suitable for the growth of fruits.