Do or due

Answer 1

Do refers to an activity of some kind.

Due is what is owed such as a payment or a commitment to be fulfilled.

Dew is the water that appears on the ground or on plant life n the morning when there is no rain.

Doo can refer to several things or is an abbreviation for some things: animal droppings, hairdoo, etc

Yoda is reported to have said: Do. Or do not. There is no try

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Answer 2

"Do" is used to give a command or express an action being performed in the present moment. "Due" is used to refer to an obligation that needs to be fulfilled or a deadline that needs to be met in the future.