What is the direct object in sentence Aaron had hung posters of every kind on walls his room?

The direct object in the sentence "Aaron had hung posters of every kind on the walls of his room" is posters.

Here's why:

* Direct objects receive the action of the verb.

* The verb in the sentence is "hung".

* Aaron is the subject, performing the action of hanging.

* Posters are what Aaron hung, making them the direct object.

Let me know if you'd like to practice with other sentences!