XX. Заполните пропуски предлогами : I work ... Machinoexport. A lot... foreign firms

XX. Заполните пропуски предлогами : I work ... Machinoexport. A lot... foreign firms are interested ... doing business ... us. We have мейд some contracts ... boilers ... a new model lately. Our boilers are ... great demand now, and we sell them ... high prices. The other day Mr. Gray ... Roberts amp; Co. came ... Moscow to have talks ... us. As soon as he came ... Moscow he phoned our secretary and мейд an appointment ... us ... the next day. He came to see us ... half ... nine. We discussed a lot ... different questions. Our terms ... payment and delivery were acceptable ... him. When the talks were over we asked Mr. Gray to have dinner ... us ... Saturday.