1.   A volcano erupts because a terrible creature is imprisoned in the mountain and every now and then struggles to get free.

2.   For others, it seems like a volcano is erupting in the room.

3.   He is like the Roman sentry who stayed at his post when the volcano erupted and poured lava over him.

4.   If these are inoperative, a volcano will not erupt again.

5.   So on this occasion when the priest set forth this ancient cry, it was as if a sleeping volcano erupted.

6.   Sometimes, perhaps not very often during their lifetimes, volcanoes erupt and present a wholly different character.

7.   The local people were warned that the volcano might erupt at any time.

8.   The volcano erupted on Thursday but there is no immediate threat to nearby towns.

9.   The volcano erupted with tremendous force.

10.   And the effect is as if some volume-filled volcano has erupted, spewing books everywhere.