1．hesitate before replying 犹豫了一下才回答
2．unable to save his life 不能救他的命
3．cut off the enemy's retreat 切断敌人的退路
4．a house looking as if to fall down 看上去好像要倒的房子
5．feel a sudden urge to run away突然想赶快逃走
6．seriously injured his legs 他的双腿严重受伤
7．cause a great loss 造成巨大损失
8．cut down a tree 砍倒一棵树
9．turn into a nightmare变成一个噩梦
10．take safety measures 采取安全措施
11．cause damage to property 造成财产损失
12．leave the area in ruins 使这个地区成为废墟
13．hope to find their missing son希望找到他们失踪的儿子
