What is so fragile the slightest sound will break it?

What is necessary to light a candle?

What room do ghosts avoid?

I take you by night, by day take you back. 
None suffer to have me, but do from my lack. What am I?

What is in front of a woman and at the back of a cow?

What did the wall say to the calendar ?

When does a traveler not need his map?

What do you call two witches who live together?

When you buy me am square.
When you open me am circle.
When you eat me am triangle.

I go up when rain comes down. 
What am I?

If you call it disappears...

A blind beggar had a brother who died. What relation was the blind beggar to the brother who died?
("Brother" is not the answer)