1. The students … Maths now.
were being taught
had been taught
are taught
are being taught

2. The final examination … by them next Saturday.
had been taken
will be taken
has been taken
is being taken

3. The report … yet.
has not been made
have not been made
is not made
was not made

4. A lot of houses … in our country every year.
had been built
are being built
are built
has been built

Over 1,800 kilometers that separate the southern border of Kazakhstan from the north, followed by several landscape zones: steppe, steppe, semidesert and desert. In the west, the territory of Kazakhstan borders the Caspian Sea in the east - the taiga Altai, and in the south - with the high peaks of the Tien Shan. The lowest point - Karagiye on Mangyshlak (132 meters below sea level), the highest - Khan Tengri peak in the mountains (7000 meters above sea level). Three major rivers - Irtysh, Tobol and Ishim - carry their water in the Arctic Ocean, the other Kazakh rivers empty into inland water bodies: the Caspian Sea, the Aral Sea, Balkhash, or simply spread out over the steppe or desert. The western part of Kazakhstan is almost entirely flat, and the east - mostly mountainous, besides such as the high mountains of the Tien Shan and Altai, considerable space is occupied Tarbagatay Saur, Kazakh low hills, Kokshetau hill.
In Kazakhstan, grows more than six thousand plant species (of which 515 - only here), its open spaces can be found about 500 species of birds, 178 species of mammals, 49 species of reptiles, 12 species of amphibians, and in the rivers and lakes - 107 species of fish.
The diversity of invertebrates is still more alone insects live here for at least 30,000 species, and besides them - a few thousand species of mollusks, worms, spiders, crustaceans, and others. Думаю вот так... 

In our city of Taraz a lot of interesting places. This large industrial enterprises, such as the Taraz metallurgical plant, Taraz metal plant, factory posh, cocomment, power plant (TPP)... Also the Park of the First President, who, especially during the holidays, is especially beautiful;at this time, significantly increasing the number of visitors above the Park. And how many in our Taraz other great places! It also stores, for reasonable prices, you can buy, for example, books, food products, building materials and much more! From one end of town to another without a break buses and get off at a particular point does not make any problems. In addition to buses, you can use for the same purpose are also taxis, or vans. However, it will be more expensive, but at the same time, most often, you will be able to get to the destination. It's not all there is to tell about NASM wonderful city-one of the oldest cities of Kazakhstan and CIS countries.

В нашем городе Таразе много интересных мест. Это и крупные промышленные предприятия, такие, как Таразский металлургический завод, Таразский завод металлоконструкций, фабрика ПОШ, кожкомбинат, электростанция (ГРЭС)... Также это Парк Первого Президента, который, особенно в дни праздников, становится особенно красивым;в это время значительно увеличивается количество посетителей вышеназванного парка. А сколько в нашем Таразе других великолепных мест! Это и магазины, в которых за приемлемые цены можно купить, например, книги, продовольственные товары, строительные материалы и многое-многое другое! Из одного конца города в другой без перерыва ходят автобусы, и доехать в ту или иную точку не составляет особых проблем. Кроме автобусов, вы можете использовать для тех же целей также маршрутные такси, или микроавтобусы. Правда, это будет несколько дороже, но в то же время, чаще всего, вы быстрее сможете добраться в пункт назначения. Это далеко не всё, что можно рассказать о нашм замечательном городе-одном из древнейших городов Казахстана и СНГ.