Определить функцию глагола to be. the whole production process in controlled by an information sistem. 2 all sources models in information theory are random process models. 3 the network of post-offces rendering direct services to production is growing year after year.

1 The whole production process in controlled by an information sistem. (форма страдательного залога).
2 All sources models in information theory are random process models. (глагол-связка).
3 The network of post-offces rendering direct services to production is growing year after year. (форма настоящего продолженного времени).