Правильно ли я обозначила времена предложений в страдательном залоге? it is well known that one form of energy can be changed into another. – present indefenite thus, the mechanical energy of falling water is turned into electric energy. – present indefenite when an object loses its potential energy, that energy is turned into kinetic energy. – present indefenite we have already seen that energy of some kind must be employed to generate the electric current. - present perfect these needs will continue to grow as more motors and melted metals are used in industry and more electric current is employed in everyday life. - future indefenite

14andrew    3   15.07.2019 07:00    0