8. This is the last time I will watch this movie. 9. Tuan wants to reduce air pollution, so he planted more trees last week. 10. People will likely travel to other planets in the future. 11. It will be impossible for people to live on Mars because there is no air. People won't be able to survive without air. 12. Colin saw a strange disk-shaped flying object when he was on his way home. Complete sentences: 1. Astronaut Neil Armstrong stepped down onto the moon on July 20th, 1969. 2. Are there intelligent beings on other planets in our solar system? 3. Mr. Brown was walking in the forest when he saw a green alien with a tiny head. 4. Scientists predict that we will find more evidence of life on other planets. Corrected parts: 1. In my dream, I talked to an alien from another planet in a very strange language. 2. We walked down that empty street when a UFO appeared in front of us. 3. Where will people live in the future if there is not enough room for everyone on Earth? 4. The gravity on the moon is different from that on Earth. 5. In the future, if we live on space stations, we will have a great view of Earth. Correct order of words: 1. The United States government has records of thousands of UFO sightings. 2. Mars, which is known as the red planet, is about 140 million miles from Earth. 3. Some people in Michigan believe aliens are real because they saw a UFO last week. 4.Because Venus's gravity is similar to Earth's, we can naturally walk there