Задание

Fill in the gaps.

On a clear Sunday morning, on the 18th May 1980, Mount St Helens after 123 years of silence. The eruption was the deadliest volcanic in the history of the United States. At exactly 8.32am, a(n) so huge it was heard hundreds of miles away, occurred. Tons of red hot emerged from the volcano’s and raced down the mountainside. Every building within a 600 m radius . Over 1.5 million tons of poisonous were released into the atmosphere. clouds darkened the sky and out the sun. Geologists and volcanologists did not the disaster.