Question

1.    Заполните пропуски предлогами. Используйте предлоги: with, for, in, at, of
       I work … Machinoexport. A lot ..
foreign firms are interested in doing business… us. We have made some contracts
… boilers … a new model lately. Our boilers are … great demand now and we sell
them … high prices.

Answer 1

 I work for Machinoexport. A lot of foreign firms are interested in doing business with us. We have made some contracts with boilers in  a new model lately. Our boilers are … great demand now and we sell them for high prices.