Passage: When changing a light bulb , you must do a few things to ensure that you will keep yourself safe and make sure that the light bulb will work . First of all , you want to make sure that the light switch is turned off so that you will not burn yourself . Then , you want to twist off the current light bulb and throw it out and twist on the new light bulb . After making sure that it is , you should try to turn on the light and see if it works . If it does work , you can be sure that you put the light bulb in properly . Then you may try it a few times , but you should feel comfortable that the light works well . Question: What does it need to be tight on? Option1: old light bulb Option2: in the socket
in the socket