⑴ A. —Good morning, boys and girls.
—Good morning, Ms Smart.
⑵ B. Please stand up, Lingling. Point to the door.
⑶ C. Point to the blackboard, Lingling.
⑷ D. —Hi, I'm Sam. —Hi, I'm Bird.
A. —Good morning, boys and girls.
B. Please stand up, Lingling. Point to the door.
C. Point to the blackboard, Lingling.
D. —Hi, I'm Sam. —Hi, I'm Bird.
