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第三单元(Unit 3) (A)1. Where's my key? I can't find it. 2. Excuse me,is this your ruler? 3. —Is it an orange? —Yes,it is. 4. Look,it is a schoolbag. 5. —Is that your notebook? —Yes,it's mine. (B)6. Good morning. I'm Wang Juan. 7. Is this your bag? 8. What's this? 9. How do you spell that? 10. Is that her desk?
