Possessive pronouns,adjectives,form of nouns

This is my … room.

...participate in a classroom discussion while liking a___________photos?

I quite like _____recipes because they are easy to make.

… flat is large.

Mr. Watson was satisfied with the results of speaking to …fathers.

Tell Ben that it's my problem,not _____

We train _____ dogs to fetch things on command.

Both Ann and Jane are coming back to ______ class.

I forgot to call Den on _______ birthday.

That isn't my key. _____is here.

What is __________?