1. There are many apples o________ the tree.
2. Is that a TV o________ a computer?
3. Is it a map o________ Shanghai?
4. You can't see the balls because they are b________ the sofa.
5. Who's the man n________ the window?
6. Please t________ these new books to your classroom.
7.—Where's my cat?
   —It's on the f________.
8. Look! The soccer ball is u________ the chair.
9. Please put the table b________ the two chairs.
10. There are two doors i________ the wall.