B .
⑴under the desk A. 在门后
⑵behind the door B.在树上
⑶on your chair C.在课桌下面
⑷in the tree D.在你的椅子上
Give me a book!
B .
It's on the desk.
B .
—_______

—I'm Tweet-tweet.
①cake chick duck pig
②cow apple pear peach