How can non-native English speakers pass the TOEFL test (within a year)?

First of all, one can neither pass nor fail TOEFL. TOEFL is simply a teaching test cause they will practically teach you all you need to know to answer the questions. It's just a medium where your ability to understand and being able to apply academic English is tested. The test is measured on a scale of 0 to 120, and the higher your score the higher your academic English language skills (proficiency).

Non-native English speakers aiming to attain a high level of proficiency would require to read and practice. Reading can help you acquire the vocabulary of English language. You should also enroll for a TOEFL class that focus on speaking and writing academic English.