阅读下面对话，掌握其大意，并根据所给字母的揭示，在标有题号的横线上写出一个英语单词的完整、正确形式，使对话通顺。
W=woman M=man
W: Hi, Phil, can you tell me how it (76) h ? _______
M: Sure. I was mountain climbing in New Hampshire in 1982.
Suddenly the (77)w became really bad. There was _______
a lot of snow and we couldn’t see anything. We got (78)l . _______
Well, we spent four days on the mountain. The (79)t _______
was 20 degrees below zero. We didn’t have any equipment or food.
W: So what happened? I guess (80)s found you, right? _______
M: Yes but we were very sick. I couldn’t move my legs because
of the cold. I spent two months in the (81)h . _______
The doctors removed my legs.
W: Right. So you lost your legs, but you want to try your best to stay active.
M: That’s right. In (82)f , I decided to make some _______
new legs for myself. I realize that no one has to be physically
disabled. We can use modern (83)t_________ to help. _______
W: And you built these great new legs. Can you go
mountain (84)c again? _______
M: Yes, I can. In fact, these are better than climb shoes. The spring（弹力）
design means they are much more (85)p . _______