1. They are organizing ths kind of work at their laboratory.
2. One of the American locomotives built in 1934 attracted much attention of the piblic, as it was the first locomotive driven by the diesel-electric engines.
3. The teacher asked the stydents a lot of questions.
4. You will have three exams next tern.
5. The distance between Boston and NY is 230 miles, it takes the train 3 hours....
6. He had arrived from London by 6 o`clock.