нужно сделать только 7 и 10 предложения.

7) When

10) And

1. If Christopher Columbus did not discover America, the world would be fewer continents.2.If Columbus did not discover America,the people of NK would say "that Columbus discovery was one ot the most important things in history"3.If people didn't know that the Earth is round(the planet is round) they would not do the trip around the world4. If people hadn't sailed with gold from Asia, people would not be interested in it5.If America did not open, people would not say: "In fourteen hundred and ninety two Columbus sailed the ocean blue.."

1. - When and where were you born? - I was born twenty years ago in Moscow.

2. - When and where did it happen? - It happened one year ago in the Alps.
3 - He has a new car. When he bought it and how many does it cost? - I did not ask him about it.

4. - We sailed down the Volga River. There was a wonderful weather.

5. - When you were at the theater was the last time? - I was there for a month ago
 
6. - That happened yesterday? Why do not you come? - Sorry, we have been very busy. We call you, but the line was busy.

7. Where you were yesterday evening? I called you. - I walked with the dog.

 8. - My computer was out of order, and I was not able to to type the text.
 
9. - The train arrived on time and we are had time at concert.

10 - What made you be said that? - I just could not tell a lie.

11. - He had lived in Moscow for ten years, and then moved out of the city.

12. - My sister is for ten years attended school, and then for five years at the university. Now she is works as a lawyer.

13. - How much time did it take you to find the these data? - It took me a few hours.

14 - How many times has she tried to enroll in Theater Institute? - Three times the, now she is a famous actress.

15. - That helped you to get out of this situation ?? - I was just lucky.

16. - What'd you do, something to help them? - I did everything I could .

17 - Who said that? - I said.

18. - I'm sorry, what did you say? I did not hear you.

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1 - Who were these people? What did they want? - They want to see you, but you were not there.
 
2 - Who wrote this novel? - I'm sorry, but I can not remember.
 
3 - of these days I got into a traffic accident, but nothing happened, no one was injured.

4. - He had a long preparing for the interview and passed his is perfectly.

5. - I'm always running around in the mornings in the park, but tossed this past year.

6. - How did you manage to get such a good job? Who suggested it to you? - They liked my recommendations.

7. - I sometimes tell her an all my secrets, but she is so let me down.

 8 - Who has advised to you this babysitter? Where do you find her? - My relatives have recommended it to me, and they were right, because it is exactly what I need.

 9. - What has happened yesterday with the printer? I could not make copies.

10. - In a restaurant are you went to of these days? - It was a Chinese restaurant in the city center. - Did you like it? - Not really.

11 - What was he like as a child? - A very active boy, and always asked a lot of questions. We could do not always to respond to them.

12. - You have had the habit of wearing things older sister? - Yes, she permitted me a to do it, but never I did do not just ask about it.