this is a blue backpack改为一般疑问句

this is a blue backpack改为一般疑问句 This is a blue backpack改为同义句 This is your blue skirt.（改为一般疑问句） This is my blue pen.(改为一般疑问句） 英语的题将下列各句变成否定句和一般疑问句并作简短的肯定 ,否定回答!1.This is a blue backpack. 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? The man (in blue) is a doctor.改为一般疑问句 it is a blue map改为一般疑问句 This is a clock.(改为一般疑问句) This is a boy.改为一般疑问句 This is a computer.(改为一般疑问句)