根据对话内容,选择方框中适当的句子,使对话完整、通顺。 Lin Tao: Hi, Sam! How are you today? Sam: 1 _ What about you? Lin Tao: I'm OK. Are you free tomorrow? Sam: 2__ Lin Tao: We're going to have a swim. Sam: 3 _ Can I come? Sam: 4___ Tao: We are going to meet outside the school gate, at two o'clock. Sam: OK. 5__ A. Fine, thanks. B. How much is it? C. Where are you going to meet? D. Yes. Why? E. Goodbye! F. Good idea!