It ___ on the morning of May, 18, 1980. Suddenly, one of the majestic mountain peaks in the Cascade Range of the North-Western United States Mount St. Helen ___ its top. Scientists____ that the mountain ____with the force of ten million tons of TNT. Within hours over 230 square miles of the beautiful forest___ into a gray lunarlike wasteland and sixty people____. The Indians of the Northwest once ___the peak Fire Mountain. Now the whole world ____that Mount St. Helen ___ indeed live volcano.
Нужные слова : to know; to happen: to be; to explode; to be transformed: to blow to be dead; to call; to estimate

1 to happened

2 blew

3 estimated

4 exploded

5 was transformed

6 weredead

7 called

8 knows

9 is