It is the year 2050 now. Tom and I want to visit the Mars. It is a planet (行星) far away from our planet---the      .
Our spaceship (太空船) flew       two weeks to get to the Mars. When we arrived, we       the door of the spaceship and looked out. The weather there      sunny and hot. We saw an alien (外星人) behind a tree.       is very tall and big and has brown hair.“Help me!”     the alien.Then we saw some monsters (怪兽)  running after       alien from the house near a tree. They wanted to kill him. So we had to run away      !We both moved to the        and jumped in. We also took the alien into our spaceship and       him. What an exciting day!
A. Moon                    B. Earth                C. Sun
A. for                     B. on                   C. in
A. closed                B. opened               C. had
A. did                   B. was                  C. isn’t
A. Him                     B. He                   C. They
A. shouted                B. talked               C. told
A. another                B. other               C. others
A. quickly                 B. easily              C. luckily
A. house                   B. spaceship            C. tree
A.scared                  B. interested           C. saved