Answer:
They are hiding from the Nazi's who have been persecuting Jews.
they don't want the workers in the building to hear them.
They think carrying luggage would look suspicious.
He wants one last look at the place where he last saw his family.
Anne is outgoing, and Peter is shy.
He resents the fact that the Nazis force Jews to wear it.
Margot is quiet and meek, but Ann insists upon expressing her own opinions.
that Mr. Dussel will be too loud.
He may go to the Nazis right away to report that there are people living in the attic.
Miep and Mr. Kraler