The CEO of the former Parkway Hospital in Queens was sentenced Tuesday to four months in prison for bribing crooked ex-state Sen. Carl Kruger. "I'm sorry for this mistake," Dr. Robert Aquino, 55, said in Manhattan Federal Court. "This was poor judgment on my part." Aquino paid Kruger a $60,000 bribe in 2008 in a futile effort to keep Parkway open. Kruger was sentenced to seven years in prison last week for soliciting Aquino and others for bribes. Aquino's plea deal called for up to three years in jail.