Please choose the correct ending to complete the given sentence: Education and Communications: [header] How to guess on a test [title] Answer the questions you know first. [step] You'll obviously want to answer as many questions as possible without running out of time. In addition, knowing the right answers to the questions above and below a tricky true or false problem can help you find a pattern.

Ending1: [substeps] If you're already in trouble, you don't have the right answers to questions. However, making sure you know the answers to known questions can help prepare you for the test. Ending2: You don't have to know every single answer or even just a lot of questions to answer. Getting an idea of what your teacher thinks you should do ahead of time can help ensure that you perform the test properly. Ending3: Guessing based on a true or false pattern is better than just guessing randomly. [substeps] When answering the questions that you know on a test that has a separate answer sheet, make sure that you skip the same questions on the answer sheet as you do on the test itself. Ending4: [title] Get a run-down of the practice tests. [step] The concept of how to guess how to guess is a key element to making a successful outcome.

Answer format: ending1/ending2/ending3/ending4