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1. The astronaut __________ with his mother's opinion that walking on the moon was quite simple.
   
 
2. The astronaut son and the mother went for a long walk in ___________.
   
 
3. The astronaut's mother was amaze by a massive lily-shaped tent situated above a __________.
   
 
4. As it was his mother's first trip to the moon, the astronaut took her around and explained her about __________