40. Lucy: Hi, Vincent! I heard you just came back from serving the villagers with the rural medical team. Vincent: After the trip, I think we are so lucky to have access to clean water every day. Lucy: ___________ Clean water is very precious in some areas. Vincent: That’s right. We should cherish water more. (A) You bet! (B) No way! (C) I’m not sure. (D)It’s a pity.