Ⅰ、 1-5 CBBCC
6-10 BCDAD
11-15 CDBCC
Ⅱ、16-20 ABDCC
21-25 BCBAC
Ⅲ、26-30 CEFAD
Ⅳ、31-35 CDABB
36-40 CDAAC
Ⅴ、 41、 not as / so strong as
42、 as old as
43、 How long
44、 How often
45、 more; than
Ⅵ、 46、 suppose
47、 past
48、 diseases
49、 relaxed
50、difference
Ⅶ、 One possible version:
My hometown
Great changes have taken placed in my hometown since 60 years ago. In the past, the living conditions were poor. Most people didn' t have enough food to eat or enough room to live in.There were a few cars on the narrow roads.Worse more, the communications were simple and slow. People kept in touch with each other only by telegram or letter.
Nowadays, with the rapid development of economy, we live a happy life. We live in big comfortable houses with big beautiful gardens. The wide roads are crowded with cars and buses.
We keep in touch with friends or relatives by phones or mobile phones. Often we communicate with each other on the Internet. And I,m surethat my hometown will become more and more beautiful in the future.