Best riddles for teens

Wash it and it isn't clean. Don't wash it and then it's clean. What I Am?

Where do bedtime books sleep?

What do you call a bee come from America?

I taste sweet and juicy. I smell fruity. I feel rough and wet. I look like a bumpy ball. What am I?

My skin is green and slippery. I have four legs and webbed feet. I eat bugs and little fish. I can swim under water and hop on land. I am a...

When does Halloween come before Valentine's day?

I have cities, but no houses. I have mountains, but no trees. I have water, but no fish. What am I?

I have wings but I'm not a bird I am small and colorful. I live in gardens and fields and forests. I used to be a caterpillar. I am a...

A boy fell off a 30 meter ladder but did not get hurt. Why not?

What goes up but never comes down?