Nazeggen means repeat what is said. You hear a sentence in Dutch and you have to repeat it.
The sentence can be short, like "Mag ik u iets vragen?" (can I ask you something?) or rather long, like "Aan de overkant van de straat spelen de kinderen op de stoep" (On the other side of the street the children play on the pavement).
The Inburgering App contains more than hundred sentences in text and audio. You can listen to them by pressing the play button.