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Use "at once" in a sentence
"At about the same time the ducal House of Pomerania was nearing extinction, so that all at once the state ruled by the Hohenzollerns seemed to approach a great extension of its territories."
"Pressed in the Commons by Labour's deputy leader, Harriet Harman, to accede to a public inquiry, Clegg said: "If there are wider issues that need to be looked at once the police investigation is complete, of course we can return to them.""
"Bobby Baldwin was dressed in gray trousers and a gray Lacoste tennis shirt, at once sporting and sober, to suit his image."