My father is pretty strong. He works all day every day.
Every
Every is used only with singular countable nouns and verbs:
Every student has a computer.
Every students have a computer.
Every car looks the same.
Every cars look the same.
We can say everybody, everyone, everything, and everywhere. These words also take singular verbs:
Everyone (or Everybody) is here.
In Canada, everywhere is cold in winter.
Everything costs a lot in this showroom.
All
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