How many months have 28 days

Question: 7 months have 31 days. How many months have 28 days?

Question: A horse jumps over a castle killing a woman, who is she?

Question: Surrounded by life , yet life is its biggest enemy. But without life there is no need for it to exist. What is it?

Question: What tastes better than it smells?

Question: What goes in the water black and comes out red?

Question: What loses its head in the morning and gets it back at night?