Question

Most people think the electric light bulb (1)invented /was invented
by Thomas Edison. In fact, it was Humphry Davy who (2)invented /was invented
it in 1800.

In 1655 Huygens (3)discovered /was discovered
Titan, the largest moon of Saturn.

The first microwave ovens (4)produced /were produced
by The Raytheon Corporation in 1954

in 1928 the colour TV (5)developed /was developed
by John Logie Baird. Two years later he (6)made /was made

the first public TV broadcast. The first book in English (7)printed /was printed
in about 1474 by William Caxton.The first designs of a submarine (8)made /were made
by Leonardo da Vinci.

Answer 1

Respuesta:

1) was invented

2) invented

3) discovered

4)were produced

5)was developed

6)made

7)was printed

8) were made