the word "mouth" has( )"m" and ( )"u" in it (选填a an the )

问题描述:

the word "mouth" has( )"m" and ( )"u" in it (选填a an the )

an;a
其实an a的选择要看发音,而并非只看是否为元音字母.
a e f h i l m n o s x 前都要用an