Answer:
I am a million peopleβs wakeup call
I am a certain five-letter word and become shorter when you add two letters to me. What am I?
I go up, let out a load and then go back down. What am I?
I am a tale in childrens' minds. Though an illusion, I occur every night. I give them a fantasy, I give them a fright. What am I?
What has one head one foot and four legs?
Whoever made me don't want me. Whoever bought me don't need me. Whoever use me don't know me.