Short clean riddles

I am the building with number stories. Find me who am I?

I am a mother and a father, but have never given birth. I'm rarely still, but I never wander. What am I?

I can fly but I have no wings. I can cry but I have no eyes. Wherever I go, darkness follows me. What am I?

Two mothers and two daughters went out to eat, everyone ate one burger, yet only three burgers were eaten in all. How is this possible?

Everyone has it and no one can lose it, what is it?

I live in a bowl. I can swim. I have a tail. I also have fins and big eyes. I am a...

How do you divide 20 oranges equally to 11 girls? No one gets more and no one gets less. All 11 girls should receive equal portions. How?

There was a railroad crossing without any cars and trucks! Can you spell that without using any "R"?

It is just something that everybody does at the same time. What is that?

You can hold it without seeing or touching it! What is that?