ADV. freely Air can circulate freely through the tunnels.
PREP. around/round The heart circulates blood around the body. | through Blood circulates through the arteries and veins.
ADV. widely The book was circulated widely in Russia. | freely
PREP. among/amongst newspapers circulating among minority communities | around/round There's a story circulating around the office that you are about to leave the company. | to The document will be circulated to all members.