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Summary
Complete the summary with the correct words.
artificial light lightbulbs light up see headlights
Artificial light is not natural, but it helps us _____________ when it is
dark. Streetlights and the ____________ of vehicles are artificial light.
They ______________ the streets at night. We also use many kinds of
_______________ in houses. Many of them have _____________. The light
from cell phones and computer screens also helps us see.
Unit 12 | Artificial Light
