Answer:
1. A 2. D 3. C 4. A
Step-by-step explanation:
1. is A because B,C, and D are conversational.
2. is D because A, B, and C are formal having Mr. or Mrs. infront of them.
3. is C because A, B, and D are responding to the question "How are you?" meanwhile "A demain" means see you tomorrow.
4. is A because B, C, and D are talking about someone else by their common noun.