Choose the right answer to fill in the blanks. （看图完成句子。）
A. Thank you.
B. Good morning.
C. Nice to meet you, too
D. Where are you from?
A: Good morning.
B: 1_________________________.
A: This is my friend, Nancy.
B: Nice to meet you.
C: 2_________________________.
B: 3_________________________?
C: I am from the USA.
B: Welcome to our school!
C: 4_________________________.1-4 BCDA