Rondillo Wrote:the first one is a river. The third one is a chalk board. 
2 out of four good job!
now just fifure out the other two and you win the knowledge of being quite clever!
Here are the answers to the four riddles, I hope they were fun.
What can run but never walks, has a mouth but never talks, has a head but never weeps, has a bed but never sleeps? A RIVER
A skin have I, more eyes than one. I can be very nice when I’m done. What am I? A POTATO
What gets whiter the dirtier it gets? A CHALKBOARD
What 7 letter word becomes longer when the third letter is removed? LOUNGER (which is a reclining seat or settee)
Should I do some more riddles?