an能和哪些单词搭配？

首字母是元音的

我认为可以是这些an egg，an umbrella, an orange, an invitation, an alien, an angel, an injection, an igloo, an elephant, an animal, an actor, an arrow, an almond, an envelope, an entry ticket, an event, an eagle, an exit, an entrance, an instrument, an iron, an earing, an earphone, an Earth