问题标题：
一、用a或an填空.1.()artteacher8.()apple2.()mathteacher9.()egg3.()youngwoman10.()orange4.()oldman11.()student5.()Englishgirl12.()universitystudent6.()Americanboy13.()activestudent7.()principal14.()day
问题描述：
一、用a或an填空.
1.()artteacher8.()apple
2.()mathteacher9.()egg
3.()youngwoman10.()orange
4.()oldman11.()student
5.()Englishgirl12.()universitystudent
6.()Americanboy13.()activestudent
7.()principal14.()day
彭进劲回答：
an
a
a
an
an
an
a
an
an
an
a
a
an
a
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