Прочитай уривок зі статті. Заповни пропуски (1- 2) частинами речень (a-e). Два варіанти є зайвими і не підходять до жодного з пропусків.
The extent of the progress made during the war was shown in 1919, 1 _____, John Alcock and Arthur Whitten-Brown, made the first flight across the Atlantic. They covered the 1890 miles from Newfoundland to Ireland at an average speed of 118 m.p.h., battling all the way against fog, ice and storms. At one point, Brown had to climb on the wings to hack away ice with a knife. In August of the same year, the world's first daily air service began, 2 _____.
a. carrying goods and passengers between London and Paris
b. so the war led to a rapid development of aviation
c. although the journey was slow
d. when two Royal Air Force officers
e. that held the key to success