I'm going to write about the alarm clock. The man who invented it was Levi Hutchins, from USA.
Hutchins got the idea in 1787. People were waking up with the light of sun, but Levi was waking up at 4:00 am, that hour of the day he couldn't see the light of sun. Then, he put number four on a clock and added a lever.
I think the alarm clock is a very intelligent invention, because it is very useful, and I use the alarm clock every day.
Great job! Just correct:"...that hour of the day he didn't see/couldn't see...of the sun."... put number four on a clock and added a lever." "...a very intelligent invention...it is...and I..."
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