Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the word that best fits each numbered blank.

Ayers Rock, which was found for the first time by European explorers in 1873, is a famous landmark (17) _______ the desert of central Australia. The original inhabitants of this part of Australia, the Aborigines, call it Uluru. It is 348 meters high, 3.6 kilometers long, and 1.9 kilometers wide. It is a beautiful red-brown color, especially when the sun (18) _______ on it early in the morning and in the evening.

When tourists want to visit Uluru, they often start 440 kilometers away in a town called Alice Springs. People on these trips usually sleep outside under the stars, not in tents (19) _______ it's more exciting. A fire keeps away snakes and other animals during the night. And when the sun comes up in the morning, the view of Uluru is amazing. After breakfast, visitors often walk around the base of the rock. There are caves around the base of the rock and inside them you (20) _______ see paintings. Some of them are thousands of years old.