1. He has never surfed, _______ _______ ?(改成反意疑问句)  
2. They have been here since 2000.  (对划线部分提问)
_______ _______ have they been here?
3. The old man _______ last year. He _______ _______ for a year. (die) (动词填空)
4. This factory opened twenty years ago.(同义句转换)
This factory _______ _______ _______ for twenty years.
5. Miss Gao left an hour ago.  (同义句转换)
Miss Gao _______ _______ _______ _______ an hour ago.
6. Her mother has been a Party member for three years .(同义句)
Her  mother_______ the  Party  three  years  _______ .
7. The Green Family moved to France two years ago. (同义句转换)
_______ two years _______ the Green family moved to France.
8. The bus has arrived here. It arrived ten minutes ago. (把两个句子合并成一个句子)  
__________________________________________

1. Please call me if you have any problems __________ (work) out.
2. Marie Curie received the Nobel Prize __________ (two) during her life time.
3. I think it is __________ (danger) for children to be close to wild animals.
4. The old man has been __________ (die) since three years ago.
5. I know only one of the ___________ (visit), how about you?