A

B

1．Good morning, class!

a．I am

2．Who is on duty today?

b．That's all right.

3．Are we all here today?

c．Thank you.

4．Nice to see you.

d．Good morning, sir?

5．How old are you, Miss Green?

e．Yes, we are.

6．How are you?

f．See you!

7．Excuse me, where's the washroom, please?

g．Nice to see you, too.

8．Welcome to China!

h．It's a secret.

9．I'm sorry.

i．Fine, thank you! And you?

10．See you later!

j．It's this way!