1．将下列各种液体分别与溴水混合并振荡，静置后分成两层，溴水层几乎无色的是　 （　　　 ）

A．氯水

B．NaOH溶液

C．苯

D．碘化钾溶液

15．The snow was very heavy last night.

It _________ _________ last night.

14．The match is so important that we must go to watch it.

It's such an important match, we _________ ______it.

13．Bike is short for bicycle.

Bike is another way ______ ________ bicycle.

12．Her grandmother has been dead for tow years.

It _____ two years since her grandmother_________.

11．When I came back home, I found the windows were all opened.

When I _______ home, I found all the window __________.

10．It's very dark here. We have to stop the work.

It's _________ dark here _________ we have to stop the work.

9．The girl doesn't know what he should do when she is alone at home.

The girl doesn't know what _____ ______ when she is alone at home.

8．She went to school yesterday. She didn't bring her bag.

She went to school _______ her bag yesterday.

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) （用所给词适当形式填空）
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.