将this is his pencil改为一般疑问句

This is his pencil-box.改为复数句子怎么改? 将this is his pencil改为一般疑问句 This is his pencil case. this is his pen.my is in the pencil box 哪里错了 怎么改 this is his pen.my is in the pencil box 哪里错了 怎么改 This is his pencil sharpener 改为一般疑问句和否定句怎么改? This pencil is yours 改一般疑问句 this is his pencil case 复数句 This is his pencil.(改为否定句) This pencil box is orange.改同义句This is ----- ----- pencil box.下面两个回答不对， This is my pencil ,and that is your.改病句 This is Lisa's pencil sharpener.改一般疑问句 This pencil case is his 改为同义句 This is his red pencil改为同义句 （ ）（ ）a red pencil This is his red pencil改为同义句 （ ）（ ）a red pencil. this is your pencil 将this is a pencil case变为一般疑问句 This is his key改一般问句