Answer:
1st: His parents object strongly AGAINST his playing too much computer games.
2nd: More and more cold.
3rd: A beautiful brand-new Swiss watch (D)
4th: was living
Step-by-step explanation:
1st: Against is the proper term for "his" parents strongly OBJECTING. Key word is "objecting."
2nd: This is just grammatically correct.
3rd: This is the correct order for the watch's adjectives.
4th: When I last SAW him...this is past tense. Hence why the answer is "was living."
Hope this helps! :D