How to use "increasingly" in a sentence

Sentences

Danny's cries and her response became increasingly shrill and desperate, for they knew that they must reach each other before nightfall or be lost forever; in the oncoming night, something waited for Danny, something fearsome that would seize him if he was alone after dark

Though Danny's screams were increasingly muffled, they were even more urgent than before, because the dirt began to cover his face and pour into his mouth

Alexander was increasingly confident that they would reach the installation unscathed, and he was aware that even Kurt Hensen, who hated flying with Morgan, was calmer now than he had been ten minutes ago.

She had been growing increasingly upset and depressed during the two days' journey