1. Soil erosion is the removal of soil from the land through the action of wind or water. 2. Excessive erosion is a matter for serious concern. 3. Suspended particles increase the water density. 4. Excessive erosion occurs with large variations in extent. 5. Consequently, erosion starts gently and then rapidly accelerates. 6. Scientists find that they can rearrange soil erosion. 7. Soil erosion by water generally begins where raindrops strike bare soil. 8. Scientists and farmers understand the importance of the problem. Преобразуйте данные предложения в Past simple tense ?

Tom, Thanks for offering to chair tomorrow’s meeting for me. Apart from Sally and Dave, the sales staff …needn't.. attend, but the Personnel people …mustn't.. miss it, as several matters concern them. You …needn't.. mention the new offices – we can deal with that later and you …needn't.. discuss the changes in the computer course timetables since they’re not urgent. Don’t forget that you …mustn't.. mention the visit by inspectors – we don’t want people panicking. You …mustn't.. forget to bring up the matter of the Smithson contract, and you also …mustn't.. leave out the new manager’s appointment. You …needn't.. go into details unless people have questions. But remember you …mustn't.. give anyone the idea that their job is at risk because of this. Make it clear that employess …needn't.. speak unless they want to. Last but not least, you …mustn't.. mention the staff-party Mr. Jones wants to announce that himself. By the way, you …needn't.. take notes, as my secretary will be there to do that. Thanks, Laura. 

Iwent to the us when i was 15 years old. i and my mom met with my dad in the germany. we spent there a week. it was the first time when i went abroad. when we got out of airplane we saw beautiful building of frankfurt airport. it was impressing. people there didn’t look like people in russia. then we went to get a taxi cab. that’s was awesome! the temperature was warm. i couldn’t believe in it. because when we left tomsk it was snowing, and now sun was shining. then an other thing which surprised me was that i could communicate with people who couldn’t speak my native language. hotel was very nice. all personal was smiling at us. i liked my room. it was big with nice windows. i could see the city at night, it was amazing. i was sad when we left germany. then i spend almost nine hours in the airplane. we flow above the atlantic ocean. we had arrived to the us around midnight. the airport building was not as big as in germany. when we went outside the building it was warm, fresh air smelt like just cut grass. i and my family get into the car. it was a big car. in america people call it the track. the sits were a little bit cold. my dad drove through the night town, it was way after midnight the streetlights were shining but the light from them was too small for me to see everything around. all i could see was the forest. it’s scared me, because i’m a city girl i don’t like spend too many time outside the town. then we drove near the lake, it was big, and my dad said “hey anna, look there are a deer! “ first time in my life i saw a real deer! i was so exited. then we got our house, o my god! it was huge and nice. my dad showedme my new room, i was tired and when i saw a bed i fell asleep almost as soon as i put my head on pillow. in my window i saw a lot of lights. on a morning when ever i woke up i saw a forest and like right in front of my window. i went up stairs everyone was awake. my dad took me with him to down town, we got into a truck. i was surprised that everything was green already, as i said before it was just april. town called rogers in a arkansas state was not so big. we drove around and i saw my new school. everything was totally different. i felt like person from a different planet.