a) •knows •world •nothing •limit •heights
1) the sky is the ...
2) scared of ...
3) all over the ...
4) who ... what's next
5) be ... new

b) use the phrases in the correctform to complete the sentences.
1 aizhan doesn't like walking across high bridges because she's ...
2 elevators ... they wereinvented a long time ago, in 1852.
3 who knows how high john can go in the company if he works hard. ... !
4 i can't believe how high the dubai tower is. ... ?
5 zhaniya has travelled ... including asia, africa and south america.​