1. 孩子们被告诫不要用太多的时间玩电脑游戏。
    The children were told ________________________ in playing computer games.
2. 他认为这部小说值得再读一遍。
    He thinks this novel ___________________________.
3. 你知道火星离地球有多远吗？
    Do you know _____________________________ Earth?
4. 许多对我们有危险的工作将来都能由机器人来做。
    A lot of work which is dangerous to us can ___________________________.
5. 这个男孩还没有到独立处理这样的难题的年龄。
    The boy isn't ________________________ such a difficult problem by himself.
6. 到目前为止，已有很多人在网上对她的言论作出了反应。
    So far, a large number of people ______________________ on the Internet.

1. Cultural Exchange Holidays offers programs _______ Chinese students and American students.
2. You can go to a real American school to have English classes with children of your _______ age.
3. On _______ cultural visits are offered to places of interest.
4. After you _______ four weeks with the family, you'll _______ Florida by train.

1. A. letters
B. stamps          
C. postcards

2. A. Rolland Hill    
B. the post office    
C. We don't know

3. A. in 19th century    
B. in 1850s          
C. today

4. A. England
B. on a hill          
C. the post office

5. A. stop the stamps from being used again  
B. be more convenient.
C. sell them better.