ruler的复数形式!

ruler的复数形式! ruler的复数即用啊 这几个单词的复数形式怎么写book,eraser,ruler,pencil,tape quilt,pen,ruler,scholl,card,notebook,daughter,picture的复数形式 quilt,pen,ruler,school,card,notebook,daughter,picture的复数形式. bus bench brush kiss chuch dish ruler peach这些单词的复数形式. baby、class、sheep、ruler的复数是什么? 谁知道ruler的复数怎么写? 写出下列各词的复数形式.book、box、bed 、ruler、pencil - case、chair、foot、ear、boody、rubber she的复数形式一定要复数形式 housewife的复数形式要复数形式, he的复数形式一定要复数形式 写出下列词的复数形式：is,this,it,that,woman,german,frenchman,knife,leaf,child,family,fly,ruler,tooth,wolf,he,american,people,sheep photo、ruler、snowman,strawberry,play的复数形式对了,还要把The children are Young Pioneers.这句话改成单数句.. ruler class boy watch box friend fish chinese knife foot child 改为复数形式 sheep的复数形式 she的复数形式 sheep的复数形式