Choose the suitable word to fill in each plank.

THE GRAND CANYON

The Grand Canyon in the United States was created by the River Colorado. People  visit  the  Grand  Canyon  Park  to  go  walking  and  running  but (21)__________ to  look  at  the  view.  It  is  a  wonderful  view  made

(22)______better by the Skywalk. The distance (23)_________ the Skywalk to the bottom of the Grand Canyon is 1219 metres. It is a platform (24) ________ walls and floor are built of glass (25)____________ that you can see the beautiful rocks of the canyon. Up to 120 people are allowed to stand on it at the same  (26)_______.It opened in 2007 and since (27)_________ thousands  of  people  have  used  it.  You  have  to (28) special covers over your shoes to (29) _______scratching the glass beneath your feet. Walking onto the Skywalk makes you (30)_________like a bird floating high up in the air.

The Grand Canyon in the United States was created by the River Colorado. People visit the Grand Canyon Park to go walking and running but (21)__________ to look at the view. It is a wonderful view made