How long did the people stay in their Anderson shelter?

Answer 1

if you worked at it all day you could make it in a day but if not just doing little buts at a time it may take you a week or more thanks

Answer 2

Until the second air raid siren has sounded. On the first one everyone must get into their shelter and then on the second, it is safe to leave .

I hope this helps :)

Answer 3

3 days