their单数形式是啥?
their的单数是?
where are their apples 单数形式
us milk people you trousers their our的单数形式
Those are their aunts and uncles.变为单数形式
3.Those are pictures of their families.(改为单数形式)
teeth these those their的单数形式怎么写?
Their sons like hamburgers and eggs变为单数形式
these的(单数形式)是啥?3Q
there 单数形式是一个单词
our是第三人称单数形式吗?
see的第三人称单数形式是?
watch的第三人称单数形式是神马?