1)If Ann was cooking when I came to her place.
2)If it was snowing when I got off the bus
3)What I was writing when you entered the room
4)What the pupils were thinking about when the teacher entered the classroom
5)What my brothers was doing when I came home last night
6)What his brother was doing while was preparing for the examination. ​

1) — What are you doing at about 9 o’clock tonight?
— I don't know yet. 
2) — What are you thinking about?
— My brother. I often think about him these days. 
3) — Are you flying to the sea or going there by train?
— I'm flying; my flight is tomorrow morning. 
4) — It’s five p.m. Where is John? He always comes home about this time. 
— I think he's working in the library. He's having a test tomorrow. 
5) — Usually Mary doesn't make mistakes in her spelling, but her yesterday’s quiz was rather bad. 
--Was it? Does she know the result? If she does, I’m sure she is learning the words at the moment.

My native city is Rostov-on-Don. It is the capital of the Don area. It was founded in 1749. It is situated on the right bank of the river Don.

In the past Rostov was a small town with small population. But now the territory of Rostov-on-Don is 380 square kilometres and the population is more than one million people.

Our city is a big industrial, scientific and cultural centre in the South of Russia. The plant “Rostselmash” is known not only in our country but abroad as well.

The largest scientific and educational establishment is the Rostov State University, which was founded in 1915 and now has more then ten faculties.

In Rostov there are four theatres: Gorky Drama Theatre, Musical Comedy, Puppet Show, Theatre of Young Spectators. The Gorky Theatre is surrounded by a large park named after the October Revolution. It is one of many parks and gardens which make Rostov a green town and where Rostovites like to walk on a nice sunny day.

During the Second World War Rostov-on-Don was occupied twice (1941 and 1942). The war cost Rostovites huge losses in life. That is why in the city there are a lot of monuments devoted to the war years and people who gave their lives for our peaceful life.

Rostov-on-Don is a large transport centre. It is not only a big knot of railways and airways but it is also the port of five seas (the Baltic, the White, the Caspian, the Black and the Sea of Asov).

Nowadays Rostov-on-Don as many other cities and villages in Russia is undergone the process of economical changes. But we hope that in some years people will be able to overpass all the difficulties and Rostov-on-Don will occupy its place of one of the biggest industrial cities of Russia.