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Use "shrewdly" in a sentence
"Granted, that "if Obama acts shrewdly" is a loophole big enough to drive a car into a ditch through."
"These messages were sealed, and protected shrewdly from the weather, and I was to deliver them to the whale-ships of the Arctic, ice-bound by the great Mackenzie."
"A clever police captain shrewdly detects the motive behind the crime and is able to penetrate the group, trap the killer, and obtain his confession."