сделать сумативку по англ яз. далабы 30, но здесь есть мощеники

1. The aim is finding (часть составного именного сказуемого) new ways ofutilizing (определение) the polymers in light industry. 
2. Not long ago we began utilizing (часть составного глагольного сказуемого) hot underground water for heating (предложное дополнение).
3. Using (подлежащее) atomic fuel for the production of electricity is highly promising.
4. Producing (подлежащее) power is dependent mainly on the fuel and machinery available.
5. The burning (подлежещее) of fuel is one of the sources of obtaining(предложное дополнение) power.
Вот так?

1. The letters have not been sent yet.
2. Have you sent the letters already?
3. I sent them tomorrow.
4. Please, make sure that the letters have been sent by tomorrow evening.
5. The letters were not sent yesterday because we forgot to buy stamps.
6. Finally the letters were sent.
1. The article was being when I came in the classroom.
2. The article has not been translated yet.
3. It was not translated yesterday, so it needs to be translated today.
4. If we do not finish it today, we shall  translate it tomorrow.
5. The article will have been translated by the end of the week.
6. If I am not mistaken, the article was translated some time ago.
7. I am afraid this article will never be translated.