Поставить предложения в пассивное состояние 4) A high-speed gear and a low-speed pinion make up the intermediate assembly.
5) The gas turbine compresses the air.
6) The gas turbine makes the air perform work

First of all I want to tell you that my mother's name is Irina and she is 37. Her height is nearly 164 cm. But she'd like to be a bit taller. Well, she is not slim but she is not fat either.  My mother has a round face as everyone has, a bit long nose and big cheerful grey eyes. Her skin is a bit pale but she likes this fact, she doesn't like ruddy faces. She has no freckles as my friend Nina has. Her forehead is open. I think my mother has a charming smile.  Her hair isn't very short but it's not long either. It is straight and black. She has rich hair. I think that she looks like her father.

First of all I want to tell you that my mother's name is Irina and she is 37. Her height is nearly 164 cm. But she'd like to be a bit taller. Well, she is not slim but she is not fat either.  My mother has a round face as everyone has, a bit long nose and big cheerful grey eyes. Her skin is a bit pale but she likes this fact, she doesn't like ruddy faces. She has no freckles as my friend Nina has. Her forehead is open. I think my mother has a charming smile.  Her hair isn't very short but it's not long either. It is straight and black. She has rich hair. I think that she looks like her father.