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Probably you have seen photos of the Grand Canyon. But you must go there    1   to feel its size and beauty. The Grand Canyon is one of the greatest

   2   wonders of the world.

The Colorado River made the Grand Canyon over millions of years. Slowly, the river cut down   3  hard rocks. At the same time, the land was    4  . Today the canyon is very   5   . It’s also very    6  , about 20 kilo-

metres. And    7   its height, there are different kinds of plants and animals on both sides of the canyon.

The canyon looks different at different times of the day, and   8   different seasons and weather. At sunrise, the red, gold, brown and orange colours of the rocks are    9   clear and bright. Whether you see the Grand Canyon from the top or the bottom, it will be a(n)   10   that you will never forget.