Ex 31 Complete the following sentences using the Past Continuous Tense. Model: When I came to this town three years ago, this bridge across the Volga was still being built.

1. I haven't been to the show but I was present when the best photos (choose). 2. When I left the Institute I didn't know yet the marks the students had got because their papers (look through). 3. When I was a worker at this factory this work still (do) by hand. 4. Just this very question (discuss) when I joined in the conversation. 5. He entered the hall in the dark and didn't understand at first what film (show). 6. She had the feeling that she (watch). 7. I wasn't surprised that he (listen to with such interest). He is a very good lecturer. 8. He was disturbed by the noise coming from the room next to his. He was sure that some experiments (make) there. 9. When she entered the class-room, the last student (examine).

185

500

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какахааа

4,4(38 оценок)

пусть х скорость одного,

тогда (х+5) скорость другого

х+(х+5)-скорость сближения поездов

известно,что время движения 3 часа,а расстояние 495 км

3(х+(х+5))=495

3х+3х+15=495

6х=480 | /6

х=80

80+15=95 скорость второго

ответ: 80 км\ч скорость первого,95 км\ч скорость второго

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