问题
补全对话，情景问答
根据情景，完成下列各题。
1. 当你没有听清别人说的话时，你应该说：[ ]
A. Which do you want?
B. Sorry, what's this?
C. Pardon?
D. Hello!
2. 当你向别人请求帮助，但别人无法向你提供帮助时，你应该怎么说？[ ]
A. Excuse me.
B. Thanks any way.
C. You're welcome.
D. Sorry, I can't.
3. 当经介绍后认识某人，你应该说：[ ]
A. Good morning.
B. Please sit down.
C. Thank you.
D. Nice to meet you.
答案
1. C 2. B 3. D