That is Sonia’s pencil.怎么变成一般疑问句

That is Sonia’s pencil.怎么变成一般疑问句 That is a pencil sharpener怎么变为一般疑问句? that is her pencil?改为一般疑问句 That is a pencil改成一般疑问句 改为一般疑问句This is a nice schoolbag.改为否定句That's your pencil box. His father's name is Mike.怎么变成一般疑问句? That is my pencil case（改为一般疑问句） that is her pencil case改为一般疑问句 That is his pencil sharpener.改为一般疑问句 That is my pencil box改为一般疑问句 That is my pencil sharpener?(改为一般疑问句 This is Lisa's pencil sharpener.改一般疑问句