You can't. It is a one-vote veto system, and continuing to teach is the basic task of on-the-job training that must be completed every year to evaluate and hire professional and technical titles. It is a necessary means to continuously improve the political quality, professional ability, skills and skills of professional and technical personnel and absorb professional frontier knowledge and skills, so it should be completed on time. If you are absent from class, you can apply to the competent department for make-up study.