6. For the past few days James in my office, as his one 1) works. is redecorated
2) is norking is being redecorated
3) has been working is being redecorated
4) has worked, has been redecorated
7. This is the first time anyone
10 us about it
1) complains
2) has complained
3) complained
4) is complaining
8. I hear the Fords a better house. It as if they to move
1) are looking for, is looking will go
2) are looking for, look. are going
3) have been looking for. looks. go
4) are looking for. looks, are going
9. Thomas his phone number yesterday because he tricks upon for several weeks.
1) has changed. was played
2) changed, had been played
3 ) had changed, had been playing
4) changed, had been playing
10. When the children a deep hole in the sand yesterday they a big shell.
1) were digging. founded 2) dug, found
3) had dug, founded 4) were digging, found
11. While father in the garage, mother lunch in the kitchen.
1) worked, has been cooking
2) was working. cooked
3) worked, cooking
4) was working. was cooking
12. They
up for ages and by the end of March they enough for a deposit.
1) were saving, got
2) had been saving. got
3) had been saving. had got
4) saved. were getting​

1. I sleep on Nick's sofa until I find a place of my own.
2. I only work there for a couple of months - I'm going to abroad in the summer.
3. If you aren't listening to the radio, why don't you switch it off?
4. There's nobody at the door. You just hear things.

1) "Я сплю" какое-то время, без уточнения временных рамок, просто "пока не найду собственное место"
2) "Я там работаю пару месяцев" - каждый день, обычное рутинное действие.
3) "Ты не слушаешь радио" - сейчас, в данный момент, поэтому здесь время Present Continuous.
4) Как подсказали ниже, "hear" обычно не употребляется в форме времени Present Continuous, как глагол восприятия.

Novosibirsk is situated on the great Siberian river Ob. Its foundation is associated with the name of the well-known Russian writer of the latter half of the 19th centuary N.Garin-Mikhailovsky. Engineering was his second profession. In 1891—1893 Garin-Mikhailovsky built the left-bank tracks of the Trans-Siberian Railway. That was the beginning of Novosibirsk's history. The residents of Novosibirsk called the railway square of the city by his name. Novosibirsk region is situated in West Siberia's southern part. Thera are 14 towns in the region.Today Novosibirsk is a big industrial, scientific, cultural and educational centre. The city turns out machines, equipment. Generators produced by the Sibelectrotyazhmash plant are operating in Cuba, Poland, Yugoslavia, Syria. The Sibelectroterm plant produces the most up-to-date electric steelsmelting furnaces, never heard of in Europe. They have been exported in all to 20 countries of the world. Other towns of Novosibirsk Region are growing rapidly. Thus, Berdsk has become a radio engineering centre producing high-fidelity radiosets. Iskitim has become one of of Russian centres producing cement and other building materials.Novosibirsk is the first populated center east of the Urals to have an underground railway of its own. There are many joint ventures in Novosibirsk. Novosibirsk has trade partners in many countries. Novosibirsk is a scientific and cultural centre. Akademgorodok, the township of the Siberian branch of the Russian Academy of sciences is famous throughout the world. Novosibirsk is called a city of three Academies: the Siberian branch of the VASKHNIL, the Siberian branch of the Russian Medical Academy of Sciences and the Siberian branch of the Russian Academy of Sciences.Akademgorodok is situated on the coast of the man-made Ob Sea. More than twenty research institutes, the University are situated there. Research work is being done on a very lardge scale there.Residents of Novosibirsk are proud of its State Academic Opera and Ballet House, one of the worlds's biggest, its Conservatoire of Music, the Operetta House and the Puppet Theater.The Art Gallery in Novosibirsk is certainly the worth seeing! It contains works of Ivan Shishkin, Vasily Tropinin, Nikolai Rerickh, Arkhip Kuindzhi, Ilya Repin, Vasily Surikov, as well as contemporary artists. On the bank of the river Kamenka stands the tall building of the State Public Scientific and Technical Library. It has more than five million volumes on its shelves.Novosibirsk is an educational centre as well. Every third resident of Novosibirsk is a student who can make his choice of colleges. The city is still growing and becoming more beautiful with every passing day.