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Our World 4 - Unit 7 - Grammar 1 (p.120-121)
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Cars use one of the first inventions to move. There are four of these for each car.
wheel
Oops!
Okay!
_________________ is not an invention. It always existed in nature--in lightning, for example.
Electricity
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Inventors used __________ and creativity to make new inventions such as electric lights.
imagination
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make calls with a cell phone
In the 1950s, people didn't use to make calls with a cell phone.
Oops!
Okay!
listen to jazz --> listen to rock n' roll
I used to listen to jazz but now I listen to rock n' roll.
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The Wright brothers _____________ in 1903 with their invention when they flew the first plane.
succeeded
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In 1824, Louis Braille invented _________ for blind children to read.
Braille
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Okay!
walk to school
When I lived in America, I didn't used to walk to school.
Oops!
Okay!
When _________ were invented, electricity became even more useful.
batteries
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Okay!
Make a sentence using, "board games".
When I was 8 years old, I used to play board games.
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Okay!
have computers
We didn't used to have computers before there was electricity.
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Okay!
mom drive me to school
When I lived in America, my mom used to drive me to school.
Oops!
Okay!
Why did people use to read by candlelight?
They didn't use to have electricity.
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Okay!
5 years old
When I was five years old, I didn't use to have brothers and sisters.
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Okay!
If there is a problem, someone will find a ___________ and invent something new.
solution
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Okay!
Make a sentence using, "ride my bike".
When I was six, I used to ride my bike.
Oops!
Okay!
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