This is an orange.画线：“an orange”对该部分提问

This is an orange对画线部分提问 This is an orange.画线：“an orange”对该部分提问 it is (black and white)画线提问.this is an orange orange.(一般疑问句）（）it green?NO,it(). 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? it is an orange.and orange 是画线部分,就画线部分提问? 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) 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 is an orange.it is orange.为什么第一个加an,而第二个不加an She is OK.改为一般疑问句This is a ruler.改为一般疑问句This is an apple.对划线部分进行提问 画线：an appleIt is an orange.(改为否定句） this is an orang对an orange进行提问