whose pencil is that?怎么回答?

whose pencil is that?怎么回答? 组词成句；that whose sharpener pencil is that your pencil?的否定回答 Where is my pencil怎么回答 Where is the pencil 我怎么回答 is that pencil case 怎么改? Is that ___(she)pencil怎么填 whose pencil-box is this回答 a,my b,mine c,me d,l Is that her pencil case?（做否定回答） Is that your pencil sharpener.做否定回答 Is that your pencil case?做肯定回答 —whose pencil case is this