1．(2010年北京海淀模拟)Only when he returned from the exchange program______how much he enjoyed it.

2．(2010年北京东城模拟)______was in this research______I collected sufficient data for my report.

3．(2010年北京东城模拟)The number of people，who have access to their own cars，______sharply in the past decade.

4．(2010年河南郑州模拟)-How did you enjoy your visit?
-______in my life had I received such good service from any business.

5．(2010年河南郑州)The professor spoke so fast that I found ______him.

6．(2010年河北保定模拟)-Did you arrive here this morning?
-Yes，it was at nine o'clock______we came here.

7．(2010年皖南八校联考)______about the economical crisis that he decided to look for more information about it.
 

8．(2010年皖南八校联考)Was it in the beautiful park______was located by the sea______we first met our new Chinese teacher?  

9．(2010年四川成都模拟)It is exactly the way______we speak______makes our teacher angry.We should be more polite next time.

10．(2010年江西协作体)-She got her first science fiction published.It turned out to be______. -When was that? -It was in 2008______she was still in college.

11．(2009年江西协作体)-It was careless of you to have left the house without turning off the cooker.
-My God！______.

12．(2009年高考湖南卷)Every evening after dinner，if not________from work，I will spend some time walking my dog.

13．(2009年重庆诊断)Not a single word______at the meeting yesterday.

14．(2009年重庆诊断)He charged$5,000 for the second?hand car，______we managed to bring the price down.

15．(2009年西安八校联考)Then______that the war was over.

16．(2009年西安八校联考)"Once people think you are a liar，it's hard______，no matter what you'll say，"father warned his son.

17．(2009年江西南昌模拟)Never before______in greater need of modern public transport than it is today.

18．(2009年河北石家庄模拟)-Tomorrow is Christmas!
-______？We have no holiday anyway.

19．(2009年河北石家庄模拟)______seems to be a possibility that  we shall be able to afford the car we need.

20.(2009年杭州高三模拟4月)A cup of water，______you will feel better.