2 ** Put the speech bubbles in the correct order. It's B-R-A-I-N-Y. What does 'brainy' mean? He's very brainy Oh, I see. How do you spell 'brainy'? 1 That's my friend Peter 1 over there. He's very brainy. Pardon? Can you repeat that, please? It means 'very clever'. You know, he's got a big brain. Thanks.

1) Many thousands of years ago there were no houses such as peo­ple live in
today, weren't there?

2) Did later people leave their caves and trees and begin to build houses out of different materials such as mud, wood or stones?

3) Did the ancient Egyptians or Chineses often erected their huge constructions to commemorate their kings or pharaohs?

4) Who understood the art of building with cut stone, and their buildings were beautiful as well as useful?

5) What did they also erect?

6)  Some of their constructions are used till now, aren't they?

7) Is it known that the manufacture of lime is one of the oldest industries used by
man?

1) Were to the History of Construction With the introduction of the railways and steam machinery, trans­portation and manufacturing costs considerably reduced and  concrete came to be more widely used, but it was still very much a neglected materia? - общий
2) The big break-through was the discovery of Portland cement by Joseph Aspdin in 1824, a worker in an English town, wasn't it? - разделительный
3) What was first used on a large scale in the construction of the Thames tunnel in 1828?  - специальный к подлежащему
4) Were patents taken out for all sorts of systems in all countries or cities? - альтернативный
5) When has the post-war era given the biggest boost to concrete, both reinforced and prestressed? - специальный