His calm demeanor put everyone at ease.

He is not at all lazy.

Even if you are rich, you cannot buy everything.

This book is very interesting.

The flow of the river is very calm.

We often have picnics by the river on weekends.

We often have picnics by the river on weekends.

We have a picnic by the river every weekend.

The Adige is the second longest river in Italy.

The Congo River is the largest river in Africa.