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_____ inventor often spends years trying to solve ____ specific problem.
An inventor often spends years trying to solve a specific problem.
_____ light bulb is often associated with Thomas Edison, but he wasn't ____ only person working on it.
The light bulb is often associated with Thomas Edison, but he wasn't the only person working on it.
Scientists in _____ Switzerland are currently developing _____ new type of sustainable battery.
Scientists in — Switzerland are currently developing a new type of sustainable battery.
Alexander Graham Bell is famous for inventing _____ telephone, but he also worked with the deaf.
Alexander Graham Bell is famous for inventing the telephone, but he also worked with the deaf.
____ internet has made it easier for ____ people to share ____ information across the Pacific Ocean.
The internet has made it easier for — people to share — information across the Pacific Ocean.
Did you know that ______ first man on the moon used _____ computer less powerful than a modern watch?
Did you know that the first man on the moon used a computer less powerful than a modern watch?
____ Creative thinkers often find _____ inspiration while they are going for a walk.
— Creative thinkers often find — inspiration while they are going for a walk.
Marie Curie was _____ first woman to win ____ Nobel Prize for her work in physics.
Marie Curie was the first woman to win a Nobel Prize for her work in physics.
Many people believe that ______ wheel is _____ most important invention in ____ human history.
Many people believe that the wheel is the most important invention in — human history.
______ telescopes allowed _____ astronomers to see _____ stars more clearly than ever before.
—Thelescopes allowed — astronomers to see the stars more clearly than ever before.
Most modern cars can travel at over 120 km ___ hour thanks to ____ internal combustion engine.
Most modern cars can travel at over 120 km an hour thanks to the internal combustion engine.
If you have ________ brilliant idea, you should apply for ______ patent immediately.
If you have a brilliant idea, you should apply for a patent immediately.
Johannes Gutenberg invented _____ printing press in ____ 15th century, which changed _____ history forever.
Johannes Gutenberg invented the printing press in the 15th century, which changed — history forever.
______ Wright brothers flew ______ first successful airplane in ____ USA.
The Wright brothers flew the first successful airplane in the USA.
_______ more complex the machine is, ______ harder it is to repair.
The more complex the machine is, the harder it is to repair.
We got _____ email from ____ laboratory saying ____ experiment was ____ success.
We got an email from the laboratory saying the experiment was a success.