Riddle contest

What has to be broken before you can use it?

What month of the year has 28 days?

What is full of holes but still holds water?

what can you break even if you never pick it up or touch it?

what goes up but ever comes down?

what gets wet while drying?

I shave every day but my beard stays the same. What am I ?

I have branches but no fruit, trunk or leaves. What am I ?

What has many keys but can' t open a single lock?

What has one eye but can' t see?