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| 1. Our scientists are solving important problems of mathematics, chemistry, electronics, medicine and biology. are solving Present Continuous Active 2. Petersburg has already maintained close contacts with other countries. has maintained Present Perfect Active 3. In 1984, the entire Baikal-Amur Mainline project went into working operation. went into Past Simple Active | 1. , , , . 2. . 3. 1984 - . |
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| 1. We are building a new railway line in this region. 2. This diagram has already helped them to solve this problem. 3. You have to go to the station at once. | 1. . 2. . 3. . |
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| Moscow metro There are many stations in the Metro; their surface buildings and underground halls are spacious, well ventilated and well lit. They differ widely in architectural design and have decorations of marble, bronze, aluminum and glass. The present Metro coaches are much better than the early ones. They are considerably lighter in weight, and the seats are soft. Muscovites and the visitors to the city do not wait long for trains, because the interval between them is always short. The Moscow Metro is developing rapidly. The capital is growing and new lines will continue to appear. | , , , . , , . , . , . , . . , . |
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| 1. This railway line was constructed to link central and eastern regions of the country. was constructed Past Simple Passive 2. New computers were set in our laboratory. were set Past Simple Passive 3. Everything had been done when we came. had been done Past Perfect Passive came Past Simple Active | 1. , . 2. . 3. , . |
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| 1. Being in Petersburg we visited many museums. 2. We saw new equipment prepared for our laboratory. 3. The computer used in our work is of a new design. | 1. , . 2. , . 3. , , . |
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| 1. Electric and diesel locomotives must handle 92 per cent of the total railway freight turnover of Russia. 2. This new railway will have to connect these distant regions. 3. The modern railway track will be able to carry a great volume of freight. | 1. 92% . 2. . 3. . |
