If you don't accumulate enough history at ordinary times, you are just cramming for the Buddha's feet! I suggest you read history books or materials for 20 minutes every day.
There are several methods now (that's all I need to review before the exam):
1. If there are still two days before the exam, just look at the history notebook.
2. If there is not enough time, take out all the history papers you have done (mainly multiple-choice questions, it doesn't matter whether you look at the big questions or not) because the knowledge test sites are all in the multiple-choice questions!
If you suddenly forget a knowledge point during the exam, then look at the multiple-choice questions on the test paper!
I hope you get good grades in the exam! \(^^)/