Mary still hasn't written the essay, presumably.

I hear some guy, presumably a caretaker, going "Rawr, I'm going to eat you!" from the nursery school across the street.

Both nocebo and placebo effects are presumably psychogenic.

How did East Frisian tea culture come about? Presumably through the Netherlands' trade with its overseas colonies in East Asia.

Mary presumably locked the door before leaving.

Presumably, those in positions of power would be more likely to act this way.

Tom presumably died in a train accident.

Presumably, Mary watered the flowers while we were away.

Tom will buy a new pair of glasses, presumably.

Presumably, the parrot escaped from the cage.