What's this?怎么改为复数形式

What's this?怎么改为复数形式 What s this in Engilsh? 改为复数形式 复数形式怎么改例如what‘s this in Eglish What's this 的复数形式 What’s this?复数形式简单吧 What's this in English?改为复数形式：（ ）（ ）in English? what make is this clean car?it's ford 改为复数形式 this改为复数形式 what's this?It's a box.怎么改成复数形式?下面几题也说下就是 This is his sister and that,s his son.怎么改为复数形式 将Is this that twin sister's photo改为复数形式怎么改? What's this?It's a pen.(改为复数句) What' s that?怎么改为复数? She's a girl What's this in English What's that in English 这些怎么变复数形式? Ruth is my good friend【改为一般疑问句】what's thisin English【改为复数形式】谁可以告诉我一下!谢谢第二个是what's this in English 英语句的复数形式What is this?It is a desk.改为复数形式 What color is the woman's skirt?(改为复数形式) 英语What's this?的复数形式是?