It is the year 2050 now. Tom and I want to  （参观）Mars. It is a  （行星）far away from ours-the earth.

    Our  （宇宙飞船）fly for two weeks to get to Mars. When we  （到达），we open the door of the spaceship and look out. The  （天气）there is sunny and hot. We see an alien（外星人）  （在……后面）a tree. He is very tall and big and has  （棕色的）hair. "Help me!" shout the alien. Then we see some monsters（怪兽）running after  （另一个）alien from the house near a tree. They want to kill him. So we have to run away（迅速地）！We both move to the spaceship and jump in. We also take the alien into our spaceship and  （救）him. What an exciting day！