در

The door of the house is open.

Why is the room door open?

At night, the door of our house is closed.

In the classroom, the door is always closed and the chairs are green.

Please open the door.

Before you go, lock the door.

Before I turn on the washing machine, I close the door.

I will arrive late tonight, so please do not lock the door so that I can come in by myself.

When I get home, I lock the door.

Please close the door; the street noise is very loud.

I did not lock the door, because I was waiting for my sister.