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It's Saturday morning and you have zero responsibilities — hooray! 🎉 Select ALL the sentences that correctly express that something is NOT necessary.
The correct answers are I don't have to wake up early today, We don't need to go to school on Saturdays, and You don't have to cook — we can order pizza!.
"Mustn't" does NOT mean "not necessary" — it means "prohibited" (you are not allowed to). "Doesn't has to" is grammatically incorrect; the correct form is "doesn't have to." Use don't have to or don't need to when something is not required.