Read the passage carefully and answer the questions no. 4 and 5:

Mount Everest is the highest mountain in the world. It is over 29,000 feet above the sea level. It was named after George Everest, an Englishman who first surveyed the Himalayas in 1841. Many expeditions had been led to conquer Mount Everest. Some of them were abandoned. Many climbers who took part in them lost their lives. Sir Edmund Hillary from New Zealand and his companion Tenzing Norgay from Nepal led an expedition in 1953. The expedition was set out on March 10. As the climbers were going up, they set up camps at different places. They left some of their men and supplies in those camps. The highest camp was set up at 27,000 feet. Only Hillary and Tenzing reached the height on March 25. But the top was still 2,000 feet away. They went up and up. After two months of difficult and dangerous climbing, they succeeded in reaching the top on May 10. They must have felt excited when they stood there. They have gone down in history as the conquerors of the highest mountain in the world. They were given hearty welcome in 1954. Hillary went to Britain with Tenzing in 1955. They were given Tribute in 1956. In 1956, they were recorded in the Guinness Book. In 1958, both of them were given honour of world heroes.