Good Riddles

Question: Why are the floors of basketball courts always so damp?

Question: What is square and green?

Question: What are the cleverest bees?

Question: Theres a good barbor and theres a bad barbor, The good barbor has a bad haircut and the bad barbor has a good haircut. Why is that...?

Question: There are three doors: First door~ all kinds of snake will strike you once you've entered this door. Second door~ about thousands of skillful assassins are waiting in this door. Once you've entered, they will attack you to death until there are no bones left. 3rd door~ a desert, you will be die any minutes. Because there's no water (exhaustion) and from extreme the heat of the sun. Which door would you choose? Which door you think that is safe to enter???