6.421 Read the text and answer the questions
Why couldn't people build really tall buildings in the pasur
2 When could people start building skyscrapers
3 How did the invention of the elevator change the nisu
4 Why did people want to build skyscrapers in cities?
5 Why are tall buildings called "skyscrapers
6 How fast did the Empire State Building grow?
7 What can you find in the Triumph of Astana in Kazakhstan
e elevator change the history of buildings?
b) 6.4.6.1 In Say or write three things that impressed you
from the text. What is the author's purpose?​

They study these beautiful animals instead of killing them.
Blue whales are not dangerous to people.
The blue whale is an endangered animal, nowadays, people protect whales,fortunately.
It’s unbelievable but these huge whales eat plankton – small plants and animals.
What is the largest animal on the planet? My uncle says that it’s the blue whale. He is a scientist and knows a lot about them.
It was getting dark when Laura got to her sister’s place. The entrance door was locked.
Betty was seven years younger than Laura, but she was much better at housekeeping.
Laura pressed the doorbell and heard quick footsteps. “It’s so nice of you to come,’ Laura’s sister Betty opened the door.
“Come in. We have just put a meat pie into the oven. I think it’ll be ready in forty minutes or so. You aren’t very hungry, are you?”
They nodded and went on talking. “Where’s Ken?” asked Laura. “He is repairing his car in the garage,” Laura said.
“He will join us soon.”
When Laura entered the house, she saw four women in the sitting room.

1)Radio is not playing now.
2)David is not copying out the text now.
3)It is not getting cold now.
4)We are not doing shopping now.
5)It is not raining now.
6)Carol is not playing computer games now.
7)His family is not friendly and hospitable.
8)My elder sister is not helping my mother about the house.
9)Granny is cooking dinner now.
10)Her aunt is not doing exercises now.
11)I am not writing sentences now.
12) My mother is not sleeping now.
13) The dog is not sleeping on the floor now.
14) I am not selebrating my birthday
15)Dave is not dancing now.