The Complete Interpretation of Textbooks is a synchronous tutoring textbook with a complete solution. The so-called "synchronization" is one-to-one correspondence with textbooks and courses, so it is more suitable for preview and peacetime study. It should be noted that if you choose this set of books, you should not only pay attention to grades and subjects, but also pay attention to the version (with pinyin abbreviations on the cover) because the textbooks used in different places are different, that is, the People's Education Edition and the Soviet Education Edition.

People's education and Soviet education are different from what the following classmate said, referring to the contents of teaching materials published by two different publishing houses. In a sense, it can be said that they are two completely different books, and the course content is estimated to be different, not to mention after-school exercises. Yes, there is a booklet in the required solution, which is the answer to the exercises in the corresponding textbook.

So the textbook you use is published by which publishing house, so you must choose what version. This shouldn't make do.