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the grand canyon
one of _(beautiful) tourist attractions in america is the grand canyon in arizona. it is_(long) and _(wide) than any other chasm in the world. it is a mile deep 217 miles long and 4 miles wide at_(narrow) point and 18 miles wide at_(wide) point. mountains rising from the floor of the canyon depths are mysteriously blue. as you stand on the rim of the canyon the colorado river one of america's_(large) looks_(small) than any other river. in fact the river is almost invisible from above.

The Grand canyon is the most beautiful

It is longer and wider

4 miles wide at the narrowest point and 18 miles wide at the widest point.

one of America's (the)largest looks smaller

поставьте прилагательные в требуемой по смыслу степени сравнения. Помните об артикле с превосходной степенью прилагательных.

The Grand Canyon

One of _(the most beautiful) tourist attractions in America is the Grand Canyon in Arizona. It is_(longer) and _(wider) than any other chasm in the world. It is a mile deep 217 miles long and 4 miles wide at_(the narrowest) point and 18 miles wide at_(the widest) point. Mountains rising from the floor of the canyon depths are mysteriously blue. As you stand on the rim of the canyon the Colorado River {one of America's largest) looks_(smaller) than any other river. In fact the river is almost invisible from above.