'Used' in the Bible

So the king went to Gibeon to sacrifice, for the great high place [was] there. Solomon used to offer a thousand burnt offerings on that altar.

For the fleet of Tarshish belonged to the king [and was] on the sea with the fleet of Hiram; once every three years the fleet of Tarshish used to come carrying gold and silver, ivory, apes, and baboons.

They [were] each bringing his gift; objects of silver and objects of gold, clothing, weapons, spices, horses, and mules. {This used to happen year after year}.