Mark the letter a, b, c or d to indicate the sentence that best completes each of the following exchanges

mark the letter a, b, c or d to indicate the sentence that best completes each of the following exchanges.
1. "new year is coming. let's repaint the house for the poor"  - "..."
a. no, not for me.
b. that would be great help.
c. it is very expensive.
d. not at all.
2. "take care. have a safe trip back."  - "..."
a. thanks for coming.
b. sounds good.
c. thanks, bye.
d. good luck next time.
3. "..."  -B: "that's good idea."
a. why don't we take a trip to the citadel in hue this summer holiday?
b. what happened to the citadel in hue after the storm?
c. have you heard about the citadel in hue?
d. how can we book a tour to the citadel in hue this summer holiday?