More Riddles

Here are some more riddles

1. If you combine 2 compost heaps with 3 others, how many do you have?

2. What can't be used without being stolen?

3. What is so fragile that even saying it's name can break it?

4. What holds water but is full of holes?

5. You use a knife to cut me yet you weep over my death.  What am I?

6. What goes up and down but stays in the same place?

7. If you have 5 oranges and you took away 2, how many do you have?

8. What can you see, weighs nothing and can make a barrel lighter?