How to use "intently" in a sentence

Sentences

She listened intently, prepared to throw off the covers and slip out of bed

She watched the performers intently, unaware of his gaze

She stared at him intently.

He tried to appear intently interested in the outcome of this game, but in fact, he didn't care

Billy Sandstone watched Tina intently for a while, but at last, he shifted impatiently in his chair