1     the night of July 28, 1976, one of the greatest earthquakes in the twentieth century hit Tangshan, Hebei. Strange things were happening, but people thought little of the       2     (warn). Then, at 3:42 a. m., the earth shook

Nearly a       3     (three) of China felt it. In less than one minute Tangshan was in ruins and more than 400,000 people were killed or injured. In the afternoon came another quake. Even more building     4     (fall) down. People began to wonder if the disaster would end.