Good Riddles

Question: There were 10 horses and 9 paddocks. How do you fit all 10 horses in the paddocks with only 1 allowed in each paddock?

Question: I see you, you see me; I raise my right, you raise your left. What am I?

Question: What always goes left but constantly goes down.

Question: I am lonely and yet you use me a lot. What am I?

Question: Why did the sun go to school?