Biological research is essential for understanding the complexities of life.

How much is the rent per month?

The bird flew over the river.

Carbon is an essential element in organic compounds.

The soldiers patrolled the border to ensure security.

The guy was standing in the corner of the room.

I enjoy playing golf on the weekends.

There is a restriction on the number of guests allowed in the hotel.

The significance of this discovery cannot be overstated.

Finding a rare gemstone is like finding a needle in a haystack.