It is one-sided to do only the real questions. I suggest that you can refer to Chen Wendeng's guidance book for postgraduate entrance examination, read the whole book carefully, and then do several sets of real questions one month before the exam.

The basic idea is to read the book thick first, that is, to review all the knowledge points systematically. With the help of Chen's counseling book, the details can't be let go, and the book can't be owed. Then read it thin, that is, to screen the key points and blind spots according to the real questions, to be familiar with the test-taking routines and to exercise the test-taking skills.