Please choose the correct ending to complete the given sentence: Travel: [header] How to pack for a holiday [title] Consider your travel method. [step] Whether you're flying, driving, or taking a train, each mode of transportation can require different planning. [substeps] If you're flying, you may need to plan both your carry-on and checked luggage accordingly.

Ending1: If you're traveling on a train, airlines typically allow you to book in advance, so review the booking form first. You may want to keep this information in a compact folder such as your wallet or in your checked bag. Ending2: If you're going to the airport, talk to any staff before your flight. They will be able to estimate what you'll need. Ending3: Consider keeping valuables and anything you'll need during travel in your carry-on so its near. If you are traveling on the ground bring along snacks or something to make the time go by faster like audiobooks or your favorite music. Ending4: If you're flying, decide how large the carry-on bag is going to be. Smaller bags are better for takeoff and landing.

Answer format: ending1/ending2/ending3/ending4