⑴He's sad. A.
⑵Close the book. B.
⑶He's hot. C.
⑷We are a happy family. D.
⑸He is old. E.
Teacher hot school China desk
— ____.
—It's ____.
—____.
a. I'm cold. b. This is my left hand. c. That's warm.
d. I have one book. e. Open the door. f. I am a student.