为一段短文添加适当的标点符号。
It was a dark and stormy night the wind howled through the trees and lightning lit up the sky the old house creaked and groaned as it swayed in the gusts of wind Mary huddled under her blanket and waited for the storm to pass
It was a dark and stormy night. The wind howled through the trees, and lightning lit up the sky. The old house creaked and groaned as it swayed in the gusts of wind. Mary huddled under her blanket and waited for the storm to pass.