Nowadays a lot of gadgets ... in China.
The first remote controls ... in the 1950s in the USA.
The telephone was invented by ... .
America ... in 1492.
America was discovered by ... .
... studies the structure of substances.
... studies plants and their structure.
... studies the life of plants and animals.
The first step on the Moon was taken by ... .
A lot of technologies ... invented in the future.
The theory of relativity ... by Albert Einstein.
Hundreds of tourists ... the Science Museum every day.
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