At 3:42 a.m. everything began to shake. It seemed         the world was        an end! Eleven kilometers       (direct) below the city the greatest earthquakes of the 20th century began. It was heard in Beijing,    is one hundred kilometers away. One-third of the nation felt it. A huge crack that was  eight kilometers long and thirty meters wide  cut        houses, roads and canals. Steam burst from         (hole) in the ground. Hard hills of rock became rivers of dirt. In fifteen terrible seconds a large city lay in ruins. Two-thirds of the people died or        (injure) during the earthquake. Thousands of families         ( kill)  and many children were left         parents. The number of people        were killed or injured reached more than 400,000.