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. This factory opened twenty years ago.(同义句转换)  
This factory _____ _____ _____ for twenty years.
4. Miss Gao left an hour ago.  (同义句转换)
Miss Gao _____ _____ _____ _____ an hour ago.
5. Her mother has been a Party member for three years . (同义句)
Her  mother _____ the  Party  three  years  _____.
6. The Green Family moved to France two years ago. (同义句转换)   
_____ two years _____ the Green family moved to France.
7. She went to school yesterday. She didn't bring her bag.(同义句)
She went to school _____ her bag yesterday.
8. The girl doesn't know what he should do when she is alone at home.(同义句)
The girl doesn't know what _____ _____ when she is alone at home.
9. It's very dark here. We have to stop the work.(同义句)
It's _____ dark here _____ we have to stop the work.
10. When I came back home, I found the windows were all opened.(同义句)
When I _____ home, I found all the window _____.
11. Her grandmother has been dead for tow years.(同义句)
It _____ two years since her grandmother_____.
12. Bike is short for bicycle.(同义句)
Bike is another way _____ _____ bicycle.
13. The match is so important that we must go to watch it.(同义句)
It's such an important match, we _____ _____it.
14. The snow was very heavy last night.(同义句)
It _____ _____ last night.