Please choose the correct ending to complete the given sentence: Cars & Other Vehicles: [header] How to get free gas [title] Print out your receipts and check the pumps. [step] Some pumps don't give you what you pay for. If you want to get free gas, it's important to make sure that the gas you are paying for matches up with what is advertised.

Ending1: Print a receipt for one pump and attach it to the inside of your wallet with your payment information. Then, when you're ready to register, print out and mail any remaining receipts and checks. Ending2: Check the website of your local gas company to find out the exact exact prices for any pump. [substeps] Check the time of day that you will be using the pump. Ending3: [substeps] Read the receipt carefully and check for any tab that says " free ". Many gas stations or parking lots will offer free gas during certain hours. Ending4: Sometimes the pumps can be miscalibrated, and if they are, you can get some extra gas for free. [substeps] Try filling up a container you're sure of the dimensions of, like a gas can, instead of your tank.

Answer format: ending1/ending2/ending3/ending4