21 Where is world’s longest bridge?
22 Which two countries are connected through the underwater tunnel?
France and Britain
23 Which is the busiest airport in the world 2018?
Hartsfield-Jackson Atlanta International Airport
24 Which airport has the most runways?
Chicago O’Hare International (8 runways)
25 Which airport has the longest runway?
Qamdo Bamda Airport (China)