I ate all ____ sandwiches yesterday.( I ) Can I have one of ____ ? ( you ) 2. George has lost ____ ( his ) pen. Ask Mary if (是否) she will lend him ____ . ( she ) 3. Jack has a dog and so have I. ____ ( he ) dog and ____ ( I ) had a fight ( 打架 ). 4. The teacher wants you to return that book of ____ ( he ) 5. Mr. and Mrs. Green and a friend of ____ are coming to see us. ( they ) 6. We are going to Paris to stay with a French friend of ____ . (we ) 7. _______( 我们的 ) chair is blue. 8. _______( 他们的 ) classroom is big. 9. This is _______( 她的 ) book. 10. _______( 他的 ) teacher is good.