1 when
2 who
3how long
4 whose
5 how often
6 how
7 how many
8 what time
9 which
10 where
11 what
12 why
1 when
2 who
3how long
4 whose
5 how often
6 how
7 how many
8 what time
9 which
10 where
11 what
12 why