Hi All,
While going through MGMAT Verbal material, I found one question:

Question: We were dismayed to learn that our neighbors were untidy, disagreeable, and they were uninterested to make new friends.

Answer: We were dismayed to learn that our neighbors were untidy, disagreeable, and uninterested in making new friends.

My doubt : why can't it be We were dismayed to learn that our neighbors were untidy, disagreeable, and uninterested to make new friends.