問題一覧
1
1
first
2
2
second
3
3
third
4
4
fourth
5
5
fifth
6
6
sixth
7
7
seventh
8
8
eighth
9
9
ninth
10
10
tenth
11
11
eleventh
12
12
twelfth
13
13
thirteenth
14
14
fourteenth
15
15
fifteenth
16
16
sixteenth
17
17
seventeenth
18
18
eighteenth
19
19
nineteenth
20
20
twentieth