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The _______________________ was invented to make it easier to hunt
bow and arrow
The________________ was invented to prevent diseases from spreading.
vaccination
The_____________ was invented to make it faster to write
typewriter
The __________________ was invented to make it easier to clean.
vacuum cleaner
___________________ was invented to make it easier to keep cool.
Air conditioning
__________________ were invented to improve people’s vision
Contact lenses
The _____________was invented to make it easier to see in the dark.
light bulb
________________was invented to take people up and down buildings
The lift
________________ was invented to prevent diseases from spreading.
The vaccination
____________________ was invented to help people work and travel faster
The steam engine
___________________________ was invented to scan products.
The barcode
I can make people ill and it spreads.
Disease
This is when you make something better
To improve
This is when you try new things
To experiment
This is to stop something from happening.
To prevent
This is when you think of an idea
To come up with
