Part B 第四课时 一、看图，选择合适的介词填空
on in under 1．The balls arethe table
2．The ruler isthe bag
3．The bag isthe table
under in on 二、给下列句子或对话选择正确的图片
B． C． D
Open the door, please
—Where are the toys
—They are on the floor
—Are the books on the desk
—No, they aren't
—Where is the phone
—It's on the table
D A B C 三、选择合适的选项，补全对话
A．You're welcome
B．Where are my keys
C．Are they near the phone
D．They are in the door
E．No, they aren't
Tom: 1
________ I lost my keys
Lily: Are they on the desk
Tom: 2
________ Lily: 3
________ Tom: No, they aren't
Lily: Look
________ Tom: Oh, yes
Thank you very much
Lily: 5
________ B E C D A
