题目内容

根据括号中的要求改写下列句子。
1. He is going to Shanghai. (用现在完成时) ?
   ______________________________________
2. I heard about the news about the space travel. (改为同义句) ?
    ______________________________________
3. Scientists have found life on other planets.(改为否定句) ?
    ______________________________________
4. They haven't been to Mars. (用yet) ?
       ______________________________________
5. The spacecraft has reached the moon. (用just)?
    ______________________________________ 
6. Many astronauts have visited the space station. (用already) ?
    ______________________________________
1. He has gone to Shanghai.
2. I heard of the news about the space travel.
3. Scientists haven't found life on other planets.
4. They haven't been to Mars yet.
5. The spacecraft has just reached the moon.?
6. Many astronauts have already visited the space station.
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