1.   The curtains billowed in the breeze.

2.   Curtains billow in the breeze.

3.   As white curtains billowed in the breeze, Chin chanted and played small cymbals.

4.   Curtains billow and windows suddenly fly open in the middle of the night.

5.   These pastel curtains billowed in the breeze as warm, tropical air blew softly through an open window.