Kommt, since der Mann is 3rd person singular.
Answer: Dieter benutzt oft den Radiergummi
Explanation:
Dieter use a rubber
The puli is the direct object
The buch is the direct object
The Apfel is the direct object
The book is the direct object
Frau subject
Ich subject
Mädchen subject
Bruder subject
I’m not 100% sure that’s all right but I’m pretty sure it is