Please choose the correct ending to complete the given sentence: Finance and Business: [header] How to network at an international academic conference [title] Do your homework in advance. [step] It is recommended to begin your homework at least one month in advance before the conference date. Doing your homework is the first step towards efficient networking.

Ending1: [substeps] Get in touch with professors before the conference. Talk with them about setting up an online research conference. Ending2: [title] Read up on the pros and cons of attending your conference. [step] The first time you attend a conference, you are in a room which will be crowded with people. Ending3: Homework is preparing yourself on how you will network with the people you want to network with. So when you start thinking about networking, you should first answer the question " why? ": why is it that you want to network? Then answer the question " with whom? ". Ending4: Even when you learn about your conference, don't wait until the end of the week before attempting to network. Call and check on your network regularly so that you can begin networking right before the conference.

Answer format: ending1/ending2/ending3/ending4