Fun Riddles

Question: Two is company and 3 is a crowd. What is 4 and 5?

Question: What has holes on each side, but can still can hold water?

Question: What is the best way to stop a dog from barking in, and digging up the front yard?

Question: Many have heard me, but nobody has seen me, and I will not speak back until spoken to.What am I?

Question: I have lakes with no fish.
I have roads with no cars.

What am I?