Never try to die.

Source: Tatoeba

Never rub your eyes with dirty hands.

Source: Tatoeba

The population of the country is roughly estimated at 50,000,000.

Source: Tatoeba

You must not forget your schoolbooks.

Source: Tatoeba

You mustn't tell that to your parents.

Source: Tatoeba

Don't pay any attention to Tom.

Source: Tatoeba