How to use "curiously" in a sentence

"Can you swim?" asked Cham, curiously.

"Who was he?" Sala asked curiously

Computer-controlled designs ebbed and flowed, a riotous and mad - but curiously beautiful - excess of energy consumption.

An imposing, barrel-chested man in rumpled chinos and a white T-shirt snapped on the garage light and peered curiously at them

Where there was no black powder, it was curiously like Sunday in the financial area of London, with the closed shops, the houses locked up and the curtains closed