You can clearly answer the landlord, you can't take the postgraduate entrance examination in advance, and the prerequisite for applying for graduate students is a bachelor's degree, which means that the senior can take the exam as a fresh graduate. However, you can prepare in advance: if it is cross-school and cross-major, it is the most difficult, and it is best to start preparing from the second semester of sophomore year; If you don't cross schools and majors, the difficulty is slightly smaller. You can also prepare for the third semester. Start preparing for the third semester without crossing schools and majors; If you don't cross schools and majors, it is the least difficult. You can prepare in the summer vacation before your senior year. English is very important. Many people fall at the feet of English. If English is ok, you can relax your time. Good luck!