池州石台县旅游景点:求助!关于代词的几个题目!

1.She likes to read The Wall Street Journal every day,though she also reads _____ newspapers from time to time.
A.others B.other

2.One of the countries I would like to visit is France.
Another is Germany.
Actually I would like to visit the______ West European countries too.
A.others B.other
请大家告诉我以上两题选什么答案，为什么？以及other和others之间的区别，何时用other，何时又该用others．

3. Her two sons,both of______ work in the United States as research fellows,have taken her to American for a visit.
A.who B.whom
请大家告诉我选什么答案，为什么？以及who和whom之间的区别，何时用who，何时又该用whom．

4.There is______ knowing what he will do next.
A.no one B. nobody
请大家告诉我选什么答案，为什么？以及no和nobody之间的区别，何时用no，何时又该用nobody．

5. Don't be dependent on____ for anything.
A.anybody B.anyone
请大家告诉我选什么答案，为什么？以及anybody和anyone之间的区别，何时用anybody,何时又该用anyone.

6.The villagers have the tradition to help____ in their work and life.
A. each other B.one another
请大家告诉我选什么答案，为什么？以及each other 和one another之间的区别，何时用each other ,何时又该用one another.

7. It took them five days to finish the work that____ of you could do within one day.
A.anyone B.any one
请大家告诉我选什么答案，为什么？以及anyone和any one之间的区别，何时用anyone ,何时又该用any one.

以上题目摘自薄冰英语语法练习．是本人在学习代词这一章遇到的难题．请各位英语高手和大侠们帮帮忙吧． 万分感谢！！