Repulsive. The others wouldn't fit at all. Repulsive is the best replacement for abominable.
Answer:
1. We are living in the country. 2. We where getting used to living in the country. 3. We were used to living in the country.
Explanation:
I guess that this whole thing is about changing the wording around.
Answer: they could think that you meant something different
Explanation: like you could say i hate you but if you say it in the wrong tone
they could think you actually hate them which could be bad
Informal because it is not adressing them formally