Because the problem is more difficult now, I used to be 12 in the sixth grade of primary school, but now I am 6 1 in junior high school.

Now the problem is very profound.

I am a freshman now, and I will have an exam tomorrow. (Tomorrow 20 14- 1- 16)

Buy books that are helpful for learning: one-stop reading, full interpretation and all-pass reading can be done.

When I was in primary school, our teacher asked me to buy an all-pass card. Now I am in junior high school, and I don't understand it at all. You can buy any books (reference materials) that will help you study. The key is to improve your academic performance.

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I wish you progress in your study!

If you are satisfied, you can click "Adopt as Satisfied Answer"!