Workbooks are almost the same, mainly to choose the one that suits you. It is generally recommended to choose a detailed answer. If you have questions that you can't do, you can also learn by answering them. In addition, it is best to bring some summaries to help with your study.

These two papers are both very good, each with its own merits. The number of exercises every day is relatively small, and the types of questions are relatively simple. But its answer analysis is comprehensive and suitable for basic exercises. A good set of study materials helps students improve their grades.