Dialogue arrangement: Choose A, B, C, or D to make a complete dialogue for each question.

a. Anna: That’s so thoughtful of you! How long have you been doing it?
b. Ben: I’ve been donating blood regularly for about three years.
c. Anna: Wow, Ben! I heard you donated blood again last week.
d. Anna: That’s so impressive! Three years is such a long time to stay committed.
e. Ben: Yes, I think it’s a small way to make a difference in people's lives.