The owl is hooting in the night forest.

He joked around and used vulgar language.

He was solving the exam questions without looking away.

He is suffering from acquired immune deficiency syndrome (AIDS).

This fruit has rotted.

We went down the river by boat.

He remained silent and didn't say anything.

He puffed out a breath after climbing the long stairs.

After running up the stairs, he breathed heavily.

She loves writing fan fiction.