用形容词性物主代词或名词性物主代词填空。 1.It isn't ___________ pen, it's ___________. (he, she) 2. Is it ___________ eraser?  No, it's not ___________. It's ___________. (you, I, he) 3. Have you got ___________ umbrella? (you)  Yes, I've got ___________. (I) 4. ___________ schoolbag is heavier than ___________. (he, she) 5. Whose bedroom is bigger, ___________ or ___________? (we, they) 6. Do you like ___________ Chinese teacher?  I love ___________ Chinese teacher very much. (you, we) 7. They're doing ___________ homework. (they) 8. Whose knife is it? It's ___________. (she) 9. I have a cat. ___________ name is Mimi. (It) 10. How does Mike spend ___________ holiday? (he)