Focus on the pronunciation of expire
English definition of “expire”
/ɪkˈspaɪər/ verb [I]
› to come to an end after a fixed length of time: a contract/lease/licence expires This offer expires on 31 March 2012.set/scheduled/due to expire The warranty period is due to expire at the end of November. Under current law, the state's earned-income tax credit would expire after this year.
› FINANCE, STOCK MARKET if an option (= the right to buy or sell particular shares) expires, it can no longer be exercised (= used): The investment options expire on February 5.