Yesterday, Li Ming _____ go to school. He was _____ home. He _____ a film about space. The earth, the moon and the Mars were all _____ space. There _____ people on the earth. _____ there were not people on Mars. Why? Because there were no trees. There was _____ water. There was no _____. Li Ming was sad. He _____ to go to Mars. He _____ to study hard and go to Mars in a spaceship.
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