Hello! Generally, you should apply for English Grade C for the evaluation of junior professional titles, Grade B for intermediate professional titles and Grade A for senior professional titles ... According to the category of your professional titles, report the corresponding grades. You need to master about 6,000 words and vocabulary to apply for Grade A, and about 5,000 words and vocabulary to apply for Grade B.. A level is equivalent to CET-4, and B level is equivalent to the upper level of CET-3. I suggest you use the portable English training class named Boda Kao Shen to review, and you can participate in the training at any time without the limitation of working hours!