Перефразировать предложения, употребив пассивный залог, где это возможно:
1. A barter deal involves an exchange of goods to an equal value.
2. Enterprises have the right to conduct foreign trade.
3. Countertrade covers barter, counterpurchase, buyback.

My school is very big and not very old with its traditions. It is named after V.V. Mayakovski. On the ground floor there are several classrooms of English for the Primary school and workshops, a cloakroom and a canteen, a library and a headmaster office. There are a lot of interesting books in the library. In the library there are many portraits of famous Russian writers on the walls. Our school has two PT classrooms. One of them is situated on the underground floor. This PT classroom is smaller than another one, which situated between the ground and underground floor. This PT classroom is very useful for our students. And in our canteen room we always buy very tasty cakes.

These toys are made in China every year эти игрушки делают в Китае каждый год
Good Results in new production were archived last year хорошие результаты новой продукции были зархивированы в году
The texts are being translated by students at the moment тексты переводятся студентами в данный момент
The new buildings will be built in our city next year новые здания будут построены в нашем городе в следующем году
All the necessary information was given to him yesterday вся необходимая информация была дана им вчера