1. Can you come with _______( I ).
2. These books are _______ ( they )
3. We are going to work in _______ ( we ) school factory tomorrow.
4. The books are new;  take care of _______ ( they )
5. The chair has lost one of ___________( it ) leg.
6. These books are _________( we ), ________ ( they ) are over there.
7. Bill put _______( he ) poster at the back of the classroom.
8. This is not __________ car, ________ is at home. ( I )
9. —Is this football __________( Mike )? 
    —No. _______ is under the tree. (he)
10. —What is ______________( your mother ) job?
      —She is a cleaner.