—Is this an orange?— Yes,it is.哪里错了

This is a orange orange.This is an orange orangeThis is a orange orange.This is an orange orange.请问哪句正确? 填空：-it green? It is an orange orange?(变成一般疑问句) — — an orange orange?this is a good pen.(变成否定句)this—a good pen —Is this an orange?— Yes,it is.哪里错了 This is an orange orange.的同义句 This is an orange改为复数句 This is an orange.改为复数句. this is an orange改复数句 This is an orange改为复数句 This is an orange .[改为复数句] is this an orange?(做出否定回答) （单数句子变成复数） 1.This is a map.2.That's an orange orange.3.—What's this?—It's a watch. this an is orange jacket连句用 this an is orange jacket 连成一句话 This is an orange and that is an( ) 用A,an,The填空：This is ( )orange.( )orange is ( )orange.可以空着 This book is （——）orange.It‘s（——）orange book.有四个选项,分别是/ ,a /,an a,a an,an有四个选项,分别是A:/,a B:/,an C:a,a D:an,an this is an orange.it is orange.为什么第一个加an,而第二个不加an That is an orange改为否定句咋改啊!That ————an orange this is an orang对an orange进行提问