The correct verb to complete the sentence is 'nettoyer.' Understanding correct verb forms in French is crucial for accurate sentence completion.
The correct verb to complete the sentence 'Tous les samedis je dois le balai.' is nettoyer.
In the context given, 'nettoyer' means to clean, which fits the sentence to convey the idea of cleaning the broom.
It is important to understand the correct verb forms to complete sentences in French properly.