Question

Помогите сделать нижнее упражнение

Answer 1

2 an     4 an      5 незнаю сам   7 ?  8 some    9 some    11 a 12 some 13 some  15 some 16 a 18 a   19  some 21 ?

Answer 2

1 a
2 an
3 some
4 an
5.a
6 some
7 a
8 a
9 some
10 some
11 a
12 some
13 some
14 some
15 some
16 a
17 some
18 a
19 a
20 some
21 an