№1.
1. is - present simple, has been - present perfect, was - past simple
2. met - past simple, have met - present perfect
3. is - present simple, have done - present perfect, did - past simple
4. bought - past simple, has bought - present perfect
5. is - present simple, has spent - present perfect, spent - past simple
6. broke - past simple, have broken - present perfect
7. is - present simple, is working - present continuous
8. came - past simple, is - present simple, has come - present perfect
9. is - present simple, has been - present perfect
10. felt - past simple, went - past simple, has felt - present simple, came - past simple
№2.
1. When I was younger, I have written every day.
2. It’s already 10:00, but Jane hasn’t finished her homework.
3. Joe has crashed his car three times since last Christmas.
4. Were you doing your homework?
5. Karl has been driving for five years.
6. He was late yesterday.
№3.
1. I went on working as an architect until I was in his eighties.
2. My friends tried to live abroad but they didn't like it.
3. After college she went on bcoming an artist.
4. Students need to get up early.
5. Are they fond of reading?
6. There is no harm in leaving this place.
7. It's up to you to decide.
8. My friend wants him to help them.
9. My friend brought me a novel to read.
10. What do you think of inviting them to the party?
№4.
1. He mustn't read in bed.
What he must not do?
2. She can't cross the road when the lights are red.
Can she cross the road when the lights are red?
3. You shouldn't open the window. It isn't cold outside.
Should you open the window?
Is it cold outside?
4. It isn't late yet. You mustn't go outside.
Is it already late? What must I do?
5. She shouldn't dress so formal if he goes to a picnic.
Should she dress so formal if he goes to a picnic?
6. You mustn't keep books at home so long.
What mustn't I keep at home so long?
7. We can't park here.
Can we park here?
8. You mustn't shout at the lessons.
May you shout at the lessons?
9. Teachers mustn't be late for school.
May teachers be late for school?
10. Parents mustn't obey their children.
Must parents obey their children?
№5.
1. You cannot go to the party.
2. He doesn’t have to take his dog for a walk.
3. I cannot help you.
4. He mustn't be late.
5. Can his brother speak French?
6. Paul doesn't have to go there.
7. You mustn't smoke here.
№6.
1. has
2. is
3. Is Ann a student?
4. does she get up
5. don't go
№7.
1. play
2. doesn't write
3. Do you speak
4. doesn't like
5. Does Ann have
6. works
№8.
1. began
2. got up, switched, brushed
3. Did it take
4. had
5. didn't leave
№9.
1. I do morning exercises every day.
2. He is working at a factory now.
3. Does she usually sleep after dinner?
4. We work part-time.
5. They drink tea every day.
6. Mike was a student last year.
7. Does Helen have a car?
8. You is are good friend.
9. You were good friends 2 years ago.
10. It is difficult to remember everything.
№10.
1. Does my father work as an IT-specialist?
My father works as an IT-specialist, doesn't he?
2. Does he work for a big company that develops software?
He works for a big company that develops software, doesn't he?
3. Is it mportant for everyone to make the right choice of profession?
It is important for everyone to make the right choice of profession, isn't it?
4. Did they help to reduce big parts of devices, computers and other devices?
They helped to reduce big parts of devices, computers and other devices, didn't they?
5. Did hydroelectric energy appear much earlier than other alternative sources of energy?
6. Hydroelectric energy appeared much earlier than other alternative sources of energy, didn't it?
The mass introduction of public housing began with the coming to power of Comrade Khrushchev. In 1954, he instructed to accelerate the housing crisis with the help of simple and cheap prefabricated houses combined into neighbourhoods, reports. Khrushchevka seemed to be the ideal of urban housing: individual apartments with their own bathroom and central heating were a huge step forward compared to pre-war barracks and multi-room communal services.
The houses were built according to standard designs and were devoid of any architectural excesses. The apartments were designed with such a expectation that there would be only one family living in them. Approximately 8 square metres were allocated for each tenant. The same room was used for work and lunch during the day and for sleep at night.