actor和actress前面加a还是an

actor和actress前面加a还是an actor的单数是加a还是加an. Tony wants to be -----( ) A.an actor B.an actress C.a police 理解：For example,an actor is usually a man;an actress is a wom A前面加an 还是a 快 元音字母前面加什么imaginative和artist前面应该加 an还是a 英文单词MIT前面加a还是an? European 前面加a还是an infortian前面加a,an还是the? 英语单词 sad 前面 加a 还是an? eraser前面是加a还是an hour前面加an还是a