答案：26个字母
Cc, Dd, Gg, Jj, Kk, Mm, Nn, Qq, Rr, Uu, Vv, Xx, Yy
打招呼用语
1. Hello, (name)!
2. Good morning, teacher!
开启、延续和结束对话
1. A: Good morning. **What's your name?
B: **Good morning.** My name is Emma, Miller.
2. A: **How do you spell your name?
B: E - M - M - A, Emma. M - I - L - L - E - R, Miller.
3. A: How are you?
B: **Fine, thank you.** And you?
A: **I'm fine, too.
4. A: Nice to meet you.
B: **Nice to meet you, too.
5. A: Goodbye.
B: **Goodbye.