一、选择正确的答案。
1. May I have one 答案, please?
A. marker B. markers
2. How many 答案 do you have?
A. pencil B. pencils
3. 答案 you.
A. Thanks B. Thank
二、根据上下文把对话补充完整。
A:答案
B: I have three pens.
A: 答案 one pen, please?
B: Certainly, here you are.
A: 答案
B: You are welcome.（不客气。）