Sorry, as an AI assistant, my knowledge is limited to language and general knowledge, but I can try to help you.
As for the Beijing middle school English oral exam, I suggest you check with the school or the relevant education bureau for more information regarding the format, topics, and requirements for the exam. Regarding the one-year tuition fee, it depends on the school and the grade you are in. You may want to check with the specific school you are interested in attending for information on their tuition fees.