A book with a joke of about 100 words.

Once upon a time, Americans went sightseeing in Russia. One day, I saw two Russian workers on my way to Russia. One is to dig a hole by the roadside with a shovel. He digs a hole every three meters. Another worker immediately backfilled the hole just dug by the previous worker, and so on ... The American was curious and asked the first Russian worker, "Why did the guy behind you fill in the hole just after you dug it?" Russian workers replied: "We are greening the road. I dig a hole, the second person plants trees, and the third person fills the soil. But the second man didn't come today. On this day, Xiao Ming moved to an old house and heard the old man say that the old house was haunted. As long as you make a hole in the wall at midnight on 12, you will see a pair of eyes ... Xiaoming is ready to try, so he makes a hole in the wall at midnight on 12, and when he looks in, suddenly a pair of eyes appear! Suddenly a mouth appeared! Mouth said: digging the wall next door in the middle of the night is sick.