Ⅰ、 1-5 ABCDA
6-10 ABCDA
11-15 BCDAB
16-20 CDDCD
Ⅱ、 21-25 ABCDA
26-30 CCCBA
Ⅲ、31-35 DAFCG
Ⅳ、 36-40 AABBA
41-45 ABCDA
46、 Ludovic Zamenhof.
47、 Yes, they are.
48、 He wished that everyone in his part of Poland spoke the same language.
49、 Because he believed that if everyone spoke a common language, the world would be peaceful.
50、 Only sixteen.
Ⅴ、51、 needs
52、 fever
53、 wound
54、 along
55、 expect
Ⅵ、One possible version:
How to keep healthy
How do we keep healthy? Do you want to keep healthy? Here is my advice about how to keep healthy.
Firstly, we should take more exercise, such as running, swimming, playing basketball and doing morning exercises. Secondly, we should eat more fruit and vegetables and eat less meat. We can't eat too much sugar. Thirdly, it is good for us to get enough sleep. It can help us to learn well and to keep healthy. Finally, we all know that smiling can make people younger and healthier. So we had better smile and be happy every day.
This is my advice. It can help you to keep healthy and enjoy your life.