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An alien spy is writing a guidebook on how to pretend to be human. Select ALL the rules that use the correct negative form of the Present Simple tense.
The correct answers are Humans don't eat rocks for breakfast. and A normal human doesn't sleep hanging upside down.
To form negative sentences in the Present Simple, we use don't (do not) for I, you, we, they and doesn't (does not) for he, she, it.
"They" requires don't, and "The typical teenager" (he/she) requires doesn't.