when - where - what - who - why - how
1/ --- did they achieve their report?
2/ --- came to rescue them?
3/ --- wasn't he allowed to come?
4/ --- was she taken to hospital?
5/ --- did that occur?
6/ --- happened?
7/ --- did he react?
8/ --- aren't they here?
9/ --- can he be so late?
10/ --- are we supposed to start work?
11/ --- mustn't he be late?
12/ --- is the meeting planned?