Teacher:In this task, you will be given a passage to read. A fill in the blank question will be given to you.  Your answer should fit the blank appropriately.
Teacher: Now, understand the problem? Solve this instance: The first aerodrome in the UK was established by the Aero Club at Muswell Manor on the Isle of Sheppey , and in May 1909 it was the venue of the first flight conducted in the country by a British pilot , John Moore @-@ Brabazon . In 1910 the Aero Club was granted the Royal prefix , took responsibility for controlling all private flying in the UK , and started issuing the first British pilot licences . The introduction of the de Havilland DH.60 Moth in 1925 revolutionised light aviation , and the Royal Aero Club , recognising the  vital necessity of promoting civil flying  , formed the Light Aeroplane Club scheme . Between 1925 and 1939 around 60 flying clubs were started , and more than 5 @,@ 000 pilots were trained .During World War II civil aerodromes were taken over for military use , existing military airfields were expanded , and new ones were built . This resulted in a significant inventory of facilities becoming available after the war . Pre @-@ war civil aerodromes , for example Sywell ,were returned to civilian use . Surplus military airfields were closed , and in some cases , for example Beccles , subsequently re @-@ opened as civil aerodromes . The Ministry of Civil Aviation was created to regulate all civil aviation in the UK , and this task remained the responsibility of government departments until the establishment of the independent CAA in 1972 .With an expanded infrastructure in place , GA became established after the war when manufacturers such as Cessna and Piper introduced light aircraft designed for the private market . The Cessna 172 , developed from the late 1940s Cessna 170 , was introduced in 1956 , and became the world 's best selling single @-@ engine aeroplane . Single piston @-@ engine aircraft are still the most common class of aircraft in the UK GA fleet . The development of the Rogallo wing in the 1950s fostered the development of hang @-@ gliding during the 1960s and 1970s . The 1960s also saw experiments with motorised hang gliders , but it was not until the 1970s that this blend of technologies started to mature , resulting in the birth of the microlight movement . Another milestone in the development of GA was the 1964 introduction of the Learjet 23 . Although it was not the first business jet , it popularised corporate aviation , and established the personal jet as a whole new class of aircraft.fill in the blank  :  The development of the ______ wing in the 1950s fostered the development of hang @-@ gliding during the 1960s and 1970s. 
Student:
 Rogallo