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D. Where。 is ( )9. — What39。s that? — It39。s a______. A. egg B. cake C. cakes D. eggs ( )10.— Is this an______? — No, it39。s a pencilbox. A. pencilbox B. eraser C. book D. pen ( ) 11. Li Qiang and 1 _______in No. 1 High School. A. am B. is C. are D. do ( ) 12. — Are_______teachers? — Yes,_______. A. they。they are B. you。 I am C. he。 he is D. she。 they are ( )13. _______? — That39。s Mary. A. Who39。s that