从所给的 A 、 B 、 C 、 D 、 E 五个选项中选出可以填入空白处的最佳选项,完成对话。 A. Thank you B. What's your problem C. I am sorry. D. What should I do E. My pleasure. A: Oh, Kate !I need help ! B: 1 ? A: I cramped my left leg and I can't move at allnow. B: 2 ? A: Lift myleg up, pull it straight and push my foot forward hard and hold on for a while. B: OK. A: Ouch !Could you be a little gentle? B: 3 , buddy . I am no doctor. A: It's better now , 4 for helping me out B: 5 .