Please choose the correct ending to complete the given sentence: Food and Entertaining: [header] How to wrap windows with aluminum [title] Check your windows for drafts. [step] If you are concerned about conserving heat, go around to each window and place your hand in front of it. Check to see if your hand feels a cold draft coming from outside.

Ending1: If it doesn't, you know your window isn't cool enough to use. [substeps] Consult the owner's manual if you own a windows and you don't have access to the temperature control panel. Ending2: If you can't identify drafts when they are a few inches (centimeters) away, put your hand in front of the opening of your window. [substeps] If you can't see drafts through the glass, but can hear them from inside the house, you may have a cold response to your hand. Ending3: If you notice drafts coming from inside your house, it means your windows have recently been closed. [title] Use aluminum foil or plastic wrap over windows if you want to avoid drafts. Ending4: This means that the window is leaching out some of your house's heat. [substeps] To test for drafts in the summer, go outside to a window.

Answer format: ending1/ending2/ending3/ending4