How to use "bathroom" in a sentence

I went into the bathroom and locked the door

Mrs Van Hopper knocked on the bathroom door.

I washed my face with cold water and came out of the bathroom at once

He got up and went into the bathroom

In the bathroom, she washed her face

Even in the dim, illusory light from the surrounding snow, Elliot could see that the sentry's eyes were fixed in the same unseeing gaze that Bellicosti was even now directing at the bathroom window.