Insert the correct prepositions: (1) Business letters can be sent... e-mail or fax. (2) They can be devoted ... various subjects. (3) As you know our conditions of sale stipulate payment... thirty days. (4) We have had no reply ... the statement ... account sent to you ... 18th April. (5) We have not yet received payment... your outstanding balance. (6) Nor have we received acknowledgement... our letters. (7) When we telephoned ... 23rd May we were assured. .. Mr Innis that a cheque would be forwarded ... us that day. (8) We should like to draw your attention ... this fact. (9) We must insist... receiving payment by 28th June. (10) We shall have to refer the matter. .. our solicitors.

In Russia there is lot of different kinds of public transport. Bus is the cheapest public transport. That is why bus is one of the most popular public transport in Russia.
I think that taxi is more comfortable transport than bus. That is why I prefer taxi.
But if you want to travel the best option for you is the train. Train is not so comfortable and fast as plane but it is cheaper. Busy people prefer plane because they haven’t got free time. But the plane can be delayed and you will be late for a conversation.
So I prefer plane and taxi because they are faster and more comfortable and I can afford it because I think that price is not the main.

2. The museum contained exhibits collected during two centuries.

contained сказуемое Past Simple;  collected P II в функции определения

3. He discussed methods used by the engineer.

discussed сказуемое Past Simple; used P II в функции определения

4. The engineer used the methods described in this article.

used сказуемое Past Simple; described P II в функции определения

5. The paintings discussed attached the attention of many visitors.

discussed P II в функции определения; attached сказуемое Past Simple

6. The group discussed the article translated from English.

discussed  сказуемое Past Simple;     translated P II в функции определения

7. The goods ordered under that Contract arrived yesterday.

ordered P II в функции определения; arrived сказуемое Past Simple

8. The goods offered by the firm are of high quality.

offered P II в функции определения;

9. We received your price-list enclosed with the letter.

received сказуемое Past Simple; enclosed P II в функции определения

10. We liked the new performance produced by the theatre                                  liked сказуемое Past Simple; produced P II в функции определения