情景对话。（根据情景说出应答语）
1. 向别人问路，第一句话应说：
A. How are you?
B. Excuse me.
C. Hello.
2. 若你不小心踩了别人的脚，应说一声：
A. I'm sorry.
B. Excuse me.
C. You're welcome.
3. 当你上课迟到了应说：
A. Open the door, please!
B. Help!
C. May I come in, please?
4. 当你去商店时，售货员通常首先会说：
A. How are you?
B. What are you going to do?
C. Can I help you?
5. 建议大家一起去书店，可以说：
A. There is a bookstore near our school.
B. It's a bookstore.
C. Let's go to the bookstore.
