根据短文内容和首字母提示,在下文空格处填入适当的词使短文完整.(每空一词)。

     My mother had an accident last Thursday. She was trapped in her c   1   for 20 minutes!

     It was a cold day. And the s  2   was heavy. She was driving home f   3   work at nine p.m. As there

was snow on  the road.   She drove very slowly. But u     4    , the   car  broke   down  suddenly.   She

couldn't s  5     it. And what was worse, she couldn't open the door.  She f  6   very helpless and didn't

know what to do. So  she telephoned my father with her mobile. But my father happened to(碰巧) be

in a   7   city. There were f   8   people on the road and the snow c   9   to fall around her car. She had

to call 110 for help. Two policemen arrived in a h  10   . They tried many ways to open the door. And

my mother came back home in their police car in the end. She gave us a surprise!.