Answer:
I am the kind of nut that is empty at the center and has no shell.
I'm a precious stone in a pack of cards. What am I?
I'm blue at day and black at night. I do contain some creatures born and died. What am I?
If you lose one of me, you are upset, bewildered, and perplexed. If you lose two of me, you are blissfully unaware. What am I?
I am an English word that is as long as I am valued. What am I?
Why was the cook arrested?