完成对话。 A. It's June second. B. Thank you. C. It's a pen. D. When is your birthday? E. How do you spell it? A: Hello, Cindy. What's this in English? B: __ 1 __ A: __ 2 __ B: P -E - N. A: Who buys it for you? B: My grandfather buys it for me as a birthday present. A: Oh, __ 3 __ B: It's June second. A: What's the date today? B: __ 4 __ A: Oh, happy birthday to you, Cindy. B: __ 5 __