Insert the necessary word combinations:
1. It had been realised for some time that…………., making it possible to transmit …….a distance and then reconvert them into light.
2. German engineer Karl Benz produced the first ………..in 1885 and the British motor industry started in 1896.
3. In the 19th century such great names as ……………………all did vital work on electricity.
4. The following year, ……………..Thomas Edison produced the first working telephone.
5. The invention …………made flight feasible and the American Wright brothers made the first flight in 1903.

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