英语高手来，heip~~~~

Three men were travelling in space in their spaceship,when suddenly the spaceship was attacked by a mysterious spaceship and it was badly damaged.They tried their best to control the ship,and finally it landed on a strange planet safe. The planet is almost the same as the Earth.There is air,water and even trees and flowers.The three men were amazed by what they saw,and began to search the planet to see if there were any living creatures just like human beings.They were wild with joy when they found a grand hall standing among tall trees.They entered it and saw an unbelievable picture:dozens of humans were heatedly discussing in the hall.When they saw the three men ,they smiled to them and said:"Welcome,Friends!'The three men asked them whether they are humans and why they were there.Those men answered that they ARE humans and ,what's more ,this planet is exactly the source of humans.They said that thousands of years ago ,some of the humans on this planet left the planet