Cách làm cho bạn:
1. The first airplane was made by Orville and Wilbur Wright.
2. The first air passenger was Leon Delagrange.
3. The first flight on December 17, 1903, lasted 12 seconds.
4. The first airway was between St.Petersburg in Russia and Tampa in Florida, the USA.
5. Travelling by air is cheaper now because innovations in material and engine-making technology help make lighter, stronger, and safer kinds of planes.
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