What can't go back to the previous sentences?

Never go back to the previous sentence:

1, what you missed is really missed, and you can't go back! Therefore, people really can't do anything wrong. If they do something wrong, they will never turn over! Because there is no way to make up for it, bitter!

Sometimes we miss the past, not because the present is not good, but because we miss the little beauty of the past. After all, the dead will never come back.

3, the heart is like a lock, chilling, no matter how close people are, they can't go back to the past. It takes many years to warm a heart, but it only takes a moment to cool it, and it can't be warmer.

4. I really want to contact, but I'm afraid of being rejected and I'm afraid I can't go back ... I can only look forward.

I hope to be as free as before, but I also know that I can't go back. As long as I do, I will continue to support it. After all, there are few thoughtful programs.