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____are you? I’m nine.A. How B. What C. How old( ) 6. Look! The bird is________the tree now.A. for B. on C. in( ) 7. Is that a pencil? ________ It’s a pen.A. Yes, it is. B. Yes, I am. C. No, it isn’t.( ) 8. Here________are. Thank you.A. you B. your C. it( ) 9. This________my jacket. Where________it?A. is, is B. isn’t, is C. it’s, isn’t( ) 10. “Time flies”的中