contestada

Please correct my french sentences and fill in the blank for the first one:
1.He likes to watch American movies.
Son aime regarder _______ _____.

2.His grandmother likes to watch documentaries.
Son grand-mere aime regarder une documentaries.

3.His parents like western movies.
son parents aime un western.

4.His brothers like to watch cartoons.
Son frere aime regarder un dessin anime.

5.I like to watch documentaries.
J'aime regarder une documentaries.