在yellow orange之前是用a还是an?

在yellow orange之前是用a还是an? yellow+什么=orange ( )+yellow=orange （ ）this orange.（ ）yellow yellow and blue make orange she‘s a yellow bird 我的意思是。YELLOW在这里是什么意思？ 根据问句意思,填词完成答语,what color is the orange?___ ___.It is a yellow orange.填空 orange juice为什么不是orange's juice?请问 's 是用在什么场合的? A+YELLOW=ORANGE YELLOW+BIUE=B C+RED=PURPLE RED+YELLOW+BLUE=E A= B= C= D= E= Which is the colour of the mature A.Orange B.Green C.Yellow D.White 一个橘子是 an orange 还是 a orange My new skirt is A .an orange B.orange我觉得是a,orange第一个字母是元音，应该用AN? 怎么回答Is his orange yellow? 找规律 red orange yellow green he has a yellow bike.提问a yellow bike是把a yellow bike划线提问! orange（橘子）是a orange还是an orange或者是其它? milk是用any 还是 some?There isn't ______ in the fridge.A.any orange juice B.some orange juice C.many orange juice 一件橙色的外衣用英语怎么说?（是a orange jacket 还是 an orange jacket)求大神帮助