That is an orange.怎么改成复数形式

Everyone knows that () is (). A.orange/orange B.an orange/orange C.an orange/an orange That is an orange.怎么改成复数形式 That is an orange .(改为否定句)That______an orange. 连词成句：orange,is,that,an,orange（.） that is an orange.改为复数句 对that is an orange的提问 That is an orange 的词性? That is an orange的词性? This is an orange and that is an( ) That is an orange改为否定句咋改啊!That ————an orange An orange is orange是什么意思 orange is orange an orange is orange 那种说法对? This is an orange pencilcase.用that改为否定句 That is an orange dress.（改为复数句）? is that an orange?（作否定回答） 找错What's that over there?There is an orange. It is( ).An orange is orange. An orange is orange.(改成一般疑问句)