Riddles

12345
Across
  1. 2. I have branches, but no fruit, trunk or leaf. What am I?
  2. 3. what is full of holes but still holds water?
  3. 5. If you drop I am sure to crack, but give me a smile and I will always smile back?
Down
  1. 1. What has lots of eyes, but cant see?
  2. 2. What has one head, one foot and four legs?
  3. 4. What has many keys but cant open a single lock?