41.   Soon the buildings collapsed.

42.   Some health workers, however, refuse to make rounds on the upper floors, because they fear the building will collapse.

43.   The building next door collapsed and her neighbor died.

44.   The building collapsed after workers at a construction site next door undermined its foundation.

45.   The building collapsed on him.

46.   The firefighters had rushed into One World Trade Center and were trapped on Tuesday when the building collapsed.

47.   The Palestinians then tried to carry off three soldiers, but a building collapsed on them.

48.   Then the building collapsed.

49.   They had emerged without realizing the building had collapsed on top of them.