This pencil is yours 改一般疑问句

This pencil is yours 改一般疑问句 This is Lisa's pencil sharpener.改一般疑问句 this is a new pencil-box改我一般疑问句 Is the long pencil yours?Is the short pencil yours?改选择疑问句 This is your pencil.(改为一般疑问句) This is my pencil.换成一般疑问句. This is my pencil改成一般疑问句 This is his pencil sharpener 改为一般疑问句和否定句怎么改? this is a pencil.(改为一般疑问句) this is a My home is far from yours .改一般疑问句,, It is a blue pencil.改为一般疑问句怎样改 It is a blue pencil.（改为一般疑问句)怎样改?