Exercise 7. Render the sentences paying attention to the functions of the infinitives. I. It was impossible to explain what happened. 2. I intended to use the opportunity, as it was too good to be missed. 3. It was getting too hot to work, and we decided to take a short break 4. He came into the room to shut the windows. 5. The Hermitage is too big to be seen in one day. 6. Do you want me to read the book aloud? 7. There is nothing to worry about. 8. We need a place to live in. 9. Jack decided to take a holiday from his work for a day. 10. She knows English well enough to read Shakespeare in the original. 11. He looked at the shelves of books to be read and understood. 12. The only way was to transport the injured by helicopter. 13. Can anything be done to prevent such accidents? 14. We should give him some work to do. 15. The was full, but there were still many things to be packed.

Present Perfect, Past Simple, Past Continuous или Past Perfect. 1. They (told) me yesterday that you (had got) an excellent mark. 2. When did you (receive) a letter from your friend? 3. Our grandmother (was cooking) dinner from twelve till three yesterday. 4. Look! What beautiful flowers she (is buying)! 5. They ( travelled) along the coast of Africa last year. 6. We (have not  seen) each other for ages. 7. They (have  eaten) all the apples which I (brought). 8. When the children (had had) dinner, they (went) for a walk. 9. Last summer we ( lived) in the country and (went) to the river every day. 10. My sister ( spent) a lot of money yesterday. 11. She is so upset: she (has lost) the key to the front door. 12. By the 1st of September all the children (had returned) from the country. 13. Columbus ( discovered) America 500 years ago. 14. Columbus (did not  know) that he (had discovered) America. 15. I have already ( read) five English books. 16. He (had discussed) the problem with a lot of people before he (took) a decision. 17. Mother (has baked) a delicious cake! Sit down at the table and let's eat it! 18. She (was reading) an English book the whole evening yesterday. 19. I have never ( been) to Greece. 20. Have you ever ( been) to the Niagara Falls? 21. At this time yesterday they (were sitting) on the sofa and (listening) to their grandmother who (was telling) them fairy-tales. 22. My friend has just ( rung) me up from London. 23. I (was standing) at the tram-stop when it ( began) raining. 24. We (have not  skated) since last winter.

Business communication plays an important role in human life.
The main objective of business communication is productive cooperation. The most important thing is to know how to communicate. Communication is necessary not only to present its point of view orally or in writing, but also to perceive other people's opinions. Just can not forget about the appearance, because it creates the first impression. For example, for an interview, you don't come in shorts, shirt and sneakers, because the employer will understand that you don't know the basics of business communication. If your life involves important work and especially work with people, you should wear classic outfits: white shirt, black skirt, and shoes.
Ignorance of such important factors in business communication can lead to awkward situations. I advise you to study some aspects of business communication.