情景交际：选择方框中的句子完成对话，其中有两项多余。 A: You look pale, Dr. Li. 1 B: I only feel a little tired. A: It looks more serious than being tired. 2 B: No, thanks. Nothing serious, I think. A: 3 But you have worked for thirty-six hours without having a rest. B: I'm a doctor. 4 A: 5 A. I have to save the patients. B. I know SARS is spreading. C. So you should care for yourself first. D. And it's my duty to save the patients. E. You must be tired. F. What's the matter with you? G. May I take you to the office?