The windows were open and swinging, and the curtains were flapping.

The light was fading and blazing as the curtain flapped in and out.

The room was very dark now, although the curtains were flapping open, and a grey strained light was reflected from the snow outside.

A curtain flapped wildly out of one of them.

Yes - the curtain was flapping - I saw her after he left.

I thought the curtains were flapping against the open window.

The curtains flapped silently in front of his open bedroom window.

Some blue curtains were sticking out and flapping in the breeze.

Shredded curtains flapped in protest as snow and wind shrieked into the cabin.

The curtains flapped, and Medren pushed them away again.