The blue pens are Tom's 把这句话分别变为否定句 一般疑问句 特殊疑问句

问题描述:

The blue pens are Tom's 把这句话分别变为否定句 一般疑问句 特殊疑问句

否定 the blue pens are not Tom's
一般疑问 are the blue pens Tom's?
特殊疑问句 whose are the blue pens?