This is his coat(同义句) whose is this mask?(同义句) Is this your mirror (同义句)

问题描述:

This is his coat(同义句) whose is this mask?(同义句) Is this your mirror (同义句)
Is that eraser hers?(同义句)
Whose is that textbock(同义句)

This coat is his.Whose mask is this?Is this mirror yours?Is that her eraser?Whose textbook is that?