【小题1】The water pipes in some buildings cracked and______(爆裂)
【小题2】I was f______(害怕)of being left alone in the house.
【小题3】We take______(遮蔽)in the hotel when the war starts
【小题4】The castle now is in______(废墟)
【小题5】Liu Xiang dropped out of the race due to his foot______.（伤害）