14.Strange things were happening in (41)a countryside of northeast Hebei.A(42)smelly(smell) gas came out of cracks.Mice ran out of the fields (43)looking(look) for places to hide.(44)But the one million people of the city,who thought little of these events,were asleep as usual that night.At 3:42a.m.everything began to shake.It seemed as if the world was (45)at an end.It was felt in Beijing,(46)which is more than two hundred kilometres away.In fifteen terrible seconds a large city lay in ruins.Two thirds of people (47)died (die) or were injured during the earthquake.All of the city's hospitals,75% of (48)itsfactories and buildings and 90% of its homes were gone.Then later that afternoon,(49)another big quake which was almost as strong as the first one shook Tangshan.Some of the rescue workers and doctors(50)were trapped (trap) under the ruins.Soon after the quakes the army sent 150,000soldiers to Tangshan to dig out those trapped and to bury the dead.