-----onion ---填a or an

-----onion ---填a or an 猜词 Soup is usually put in this b--- A carrot or an onion is 第四题谢谢,填a或an或or this is an onion and that is --- beef 横杠上添a an 还是/ Cut a tomato,an onion,a pickle and a bun and fry some ground Pleasa cut up( )onion and two ( ) A the,tomato B an ,tomatoe Cut up an onion and a tomato.Add them( )the br 连词成句.onion,and,cut,tomato,an,up,a,the,sandwich,add,then,to,t onion Do you think it is a fact or an o_ 填什么 I sometimes have an orange __ a banana.横线中填and还是or,说明理由. "a uniform" or "an uniform"?