Whose is that watch 怎么变同义句?

Whose is that watch 怎么变同义句? Whose is the watch?同义句 whose watch is this 改同义句 Whose book is that?改为同义句 Whose dolphin is that?同义句是什么? whose is that ball 改为同义句 Whose activity book is that?(同义句) 英语whose bike is that.(同义句) whose ruler is that?同义句 whose is that dictionary.同义句 Whose mirror is that?同义句转换 Whose is that car 写出同义句