从框里选择填入对话相应空白处的适当选项。 A. When and where shall we meet? B. How shall we get there? C. What are you going to do? D. Are you free tomorrow? E. Would you like to see some old things with me? A: Hello, this is Ann.Is that Helen ? B: Yes, speaking. A: Helen, The happy weekend is coming. 1 B: Yes, I'm not busy. I've already finished my        homework. A: 2 B: I've no idea. What about you ? A: Let me see. Let's do something interesting and helpful. 3 B: Certainly. Where? A: In the new museum. B: Oh, I remember. I heard of it last week. 4 A: By bike . It's Saturday tomorrow. The traffic must be heavy, I think. B: I agree. 5 A: At the gate of our school at nine in the morning..