⑴ A. — Is this your ruler?
— Yes, it is. Thank you.
⑵
B. — Its ears are big. Its tail is short. What is it?
— It's a dog.
⑶
C. — Good afternoon.
— Good afternoon. Two oranges, please.
⑷ D. — Please clean the blackboard, Kitty.
— OK.
⑸ E. My mouth is big.