11.   A customer pulled him out of the collapsing building.

12.   Authorities said most of the victims were killed by tin roofing sent flying by the storm or by collapsing buildings.

13.   One aid worker said rocks let loose from the mountains posed more of a threat than collapsing buildings.

14.   One aid worker said the mountains themselves posed more of a threat than collapsing buildings.

15.   Shortly after she arrived, she was struck on the head by concrete from the collapsing building.

a. + building >>共 778
new 6.64%
federal 5.44%
public 4.77%
old 2.95%
tall 1.99%
historic 1.76%
main 1.76%
nearby 1.73%
same 1.70%
high-rise 1.55%
collapsing 0.11%
collapsing + n. >>共 108
wall 8.43%
economy 6.43%
building 6.02%
tower 4.82%
structure 3.61%
peace 3.61%
home 3.21%
currency 3.21%
price 2.81%
roof 2.81%
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