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1. Many traditions are of recent , but some of them date back to times.
2. He is working on the of a new engine.
3. During the Industrial Revolution engines appeared.
4. Many new of energy are used nowadays.
5. We pay much attention to of new devices.
6. The profession of an engineer is always in great .

Nowadays healthy life-style is gaining more and more popularity. Lately people have finally realized that whatever a person would do and whatever post he would hold, health is the most valuable wealth in our life. (*The greatest wealth is Health).ПЕРЕВОД 

В настоящее время здоровый образ жизни набирает все большую популярность. В последнее время люди наконец-то поняли, что каким бы человек хотел бы сделать и какой бы пост он будет занимать, здоровье-самое ценное богатство в нашей жизни. (*Самое большое богатство-это здоровье).

Test 13
1. Tom hasn’t met his sister since he was а child.
2. Olga lived in England last year.
3. I have lost my key. I can’t find it anywhere.
4. Look! Somebody has broken my pen.
5. How many plays did Shakespeare write?
6. Do you know about Jane? She has given up smoking.
7. I’m looking for Mike. Have you seen him?
8. Your car looks great. Have you washed it?
9. Mr. Clark has worked in а bank for 15 years. Then he gave it up.
10. I don’t know this young woman. We have never met before.
11. When did you write this poem?
12. Chaikovsky was а great Russian composer.
13. Mary isn’t at home. She has gone shopping.
14. Have you seen this film? It’s fantastic!
15. Oh! I have cut my finger. It’s bleeding.
16. Where (were you born?
17. My parents got married in а small village.
18. Agatha Christie wrote 68 novels, 17 plays and more than а hundred stories.
19. I’m very hungry! I haven’t eaten anything today.
20. When sending the telegram she forgot to write her name.

Test 14. Past Simple or Present Perfect?
1. It didn`t snow this week.
2. Did you see the news on television last night?
3. Mike left school in 1999.
4. I don’t know where my brother is. Have you seen him?
5. ‘Where is your key?’ ‘I don’t know. I have lost it.’
6. We visited the local museum the other day.
7. Ann is on holiday. She has gone to France.
8. When did the last train leave?
9. ‘Would you like something to eat?’ ‘No, thanks. I have just had lunch.’
10. Was the weather good when you were on holiday?
11. We have not seen each other for а long time.
12. It’s the most interesting book I have ever read.
13. He has drunk too much coffee today.
14. What did you do at the weekend?
15. John is hungry. He has not eaten anything since breakfast.
16. She did not go to the library three days ago.
17. How long have you known Bill?
18. Olga always wanted to visit Great Britain.
19. Have you heard from Jack recently?
20. Mark Twain lived in the state of Missouri.

Test 15. Past Simple or Present Perfect?
1. ‘Has he ever been to London?’ ‘Yes. he has. Several times.’
2. ‘What’s the news?’ ‘We have won the tennis competition.’
3. ‘When did you speak to him?’ ‘We met yesterday.’
4. He has not called me this month.
5. How long have you been ill?
6. We saw an interesting film the other day.
7. I have known them for 2 years.
8. Were you happy when you were a child?
9. I always traveled by plane.
10. Where is Tom? Have you seen him?
11. It’s the most interesting film I have ever seen.
12. The construction started in April.
13. She has not called me since she arrived in Moscow.
14. They did not go to the cinema last week.
15. We have had too many tests today.
16. What did you do last Sunday?
17. William Shakespeare wrote a lot of plays.
18. I have lost my exercise-book. I can’t find it anywhere.
19. Did you go to the cinema yesterday?
20. Have you met Ann lately?