Do you know what this is?

Do you know what this is? 用you,this,do,what,is,know..组成一个句子 用 you this do what is know 组成一句话 连词成句：you,know,what,is ,this,do ,country(?) Do you know what this is?什么句子成分 you,know,what,is,this,do,country连词成句 What do you know about this organization? do you know what this mean? what’s this( )English?Do you know? What do you know about this university? i don't know what this is.do you know who the girl standing do you know what--------(it)name is