一、填空
1.The chairman quipped(打趣) that he would rather sell his__________(航空公司)than his computer systems.
2.Sam has tried the climbing before, but the storm kept him from reaching the __________ (顶峰).
3.While climbing up the stairs the old man always loses his __________ (呼吸).
4.He used to live in a dark room with dirty __________ (窗帘) hanging in front of the windows.
5.It's very cold today; the temperature has dropped below __________ (冰冻的) point.
6.The sky had clouded over very quickly. _________ (雷) and lightning were promised (预示).
