英语好的人麻烦帮我看下5、14、16、17、20、21并说下解释谢谢!这个网上答案太多了,感觉都不太对!

英语好的人麻烦帮我看下5、14、16、17、20、21并说下解释谢谢!这个网上答案太多了,感觉都不太对!
Mrs.Hill was very much interested in singing.She had a good voice but some of her high notes（高音）seemed to sound like an axle（车轴） 1   enough oil (油).Mrs.Hill knew this very well,and tried her best to   2   them.As she didn’t want to   3   the other   4   of the family,she usually went for long walk along the roads outside the city when she had time,and practised her high notes there.  5   she   6   a car or a person coming along the road,she stopped and   7   until she could   8   be heard before she started practising again   9   she was a shy（害羞的）woman.
One afternoon a fast,open car came up   10   her 80   11   and so fast that she didn’t hear it until it was only a few metres   12   her.She was singing some of her   13   and most difficult notes at the time,and as the car went past her,she saw a   14   look come over its driver’s face.The driver put his brakes（刹车）on,and as soon as the car stopped,he jumped out and began to   15   carefully at all his types to   16   if there was something wrong with   17  .Mrs.Hill didn’t dare to   18   him what the   19   had really been,so he got back into his car and drove off as puzzled as he had been when he   20  .

5 A Once
14 C strange
16 D see
17 A them
18 C tell
19 d noise
20 d stopped.
理解了这段文字意思其实很好填,那个司机听到Hill的声音,误以为是自己车的轮胎出问题了.
文章中打错了一个词,type应该是tyre(轮胎).