根据课文内容，完成短文。 Several days before July 28, 1976 many strange things happened in Tangshan. They were signs for an (1)e______. A smelly gas came out from the cracks of wells and animals became too (2)n______ to eat. But people who lived there didn't think (3)m______ of that. At 3:42 a.m. that day, the earth began to shake. In fifteen seconds, a large city lay in (4)r______, and the number of people injured or killed (5)r______ more than 400,000. Water, food and (6)e______ were cut off and the railway tracks were (7)u______ pieces of steel. Later that afternoon, another big earthquake hit the city. More people were killed or (8)i______ and more buildings fell down. But all hope was not lost. Very soon the army sent a lot of soldiers to help, and teams were (9)o______ to dig out the trapped and bury the dead. By and by things improved and the city began to (10)b______ again.