Time to riddle

1. What gets wetter and wetter the more it dries?

2. You throw away the outside and cook the inside. Then you eat the outside and throw away the inside. What did you eat?

3.What goes up and down the stairs without moving?

4. What can you catch but not throw?

5. What can run but never walks, has a mouth but never talks, has a head but never weeps, has a bed but never sleeps?

6. A certain crime is punishable if attempted but not punishable if committed. What is it?

7. Pronounced as one letter,
And written with three,
Two letters there are,
And two only in me.
I'm double, I'm single,
I'm black, blue, and gray,
I'm read from both ends,
And the same either way.
What am I?

ANSWERS
1. Towel.
2. An ear of corn.
3. A rug.
4. A cold.
5. A river.
6. Suicide.
4. An eye