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In the ______, we may live on the moon.
One day I'll ______ around the world.
Several satellites have been sent to explore the universe.
Amstrong was the first person to step on the ____.
It's impossible to count the number of _______ in the universe.
The ______ was launched in to the space.
Neil Armstong was an _________ from the USA.
It is difficult to see all the stars when it is a cloudy night.
The children enjoyed playing in the _________ model.