21.   Several detonations were heard, but it was not immediately clear whether they were caused by explosives or were shots fired at a petrol pump situated inside the barracks.

22.   Several detonations were heard, but it was not immediately clear whether they were caused by explosives or were shots fired at a petrol pump.

23.   The explosives caused a fire which destroyed the four-storey building housing the cafe.

24.   The explosives caused mild damage and injured three people.

n. + cause >>共 1473
rain 1.85%
attack 1.21%
problem 1.17%
disease 1.11%
explosion 1.03%
bomb 0.96%
drug 0.95%
storm 0.92%
blast 0.92%
virus 0.88%
explosive 0.17%
explosive + v. >>共 86
be 39.37%
go 11.84%
cause 5.80%
detonate 5.80%
blow 2.66%
have 1.93%
find 1.93%
kill 1.45%
contain 1.21%
appear 0.97%
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