在以下名詞前面的空白中填入a或an
1.actor
2.apartment
3.bow
4.castle
5.daughter
6.e-meil
7.excuse
8.friend
9.garden
10hippo
11.insect
12.intererview
13.job
14.kite
15.Iemon
16.map
17.nose
18.office
19.puppy
20.quiz
21.rose
22.star
23.tape
24.uncle
25.uniform
26.vest
27.wish
28.yard
29.zebra