What can run but never walk, have a mouth that never speaks, have a head that never weeps, and have a bed but never sleeps?

The more of this there is, the less you see. What is it?

Can you spot what's wrong with the following sentence?

PETER WAS ANGRY AT
HIMSELF BECAUSE HE
ACCIDENTALLY LEFT THE
THE KEYS TO HIS CAR
AT HIS FRIEND'S HOUSE.

O_er_t_o_

Complete the missing letters of the given word.

Do You See It?

When my father was 31 I was 8. Now he is twice as old as me. How old am I?

I’m light as a feather, yet the strongest person can’t hold me for five minutes. What am I?

A man started to town with a fox, a goose, and a sack of corn. He came to a stream which he had to cross in a tiny boat. He could only take one across at a time. He could not leave the fox alone with the goose or the goose alone with the corn. How did he get them all safely over the stream?

You may enter, but you may not come in. I have space, but no room. I have keys, but open no lock. What am I?

I am beautiful, up in the sky. I am magical, yet I cannot fly. To people I bring luck, and to some people, riches. The boy at my end does whatever he wishes. What am I?