Which alphabet letter is a question?

When it's bad luck to meet a black cat?

There is an English word that can be used up to four times in a row without modifying the spelling and form a valid grammatical sentence.

Do you know what word is that?

1. How can we put an elephant in the refrigerator?
2. How can we put a Giraffe in a refrigerator?
3. The king of the jungle invites all the animals to a party everyone comes except for one animal, which animal?
4. You come to a crocodile-infested lake, you can't go around it, you can't co under it and you can't go over it, how do you get across?

What country can make you shiver?

I am sure no one can have two things for dinner. what are they?

What do you get if you add 2 to 100 four times?

What do you call a fish without an eye?

Why did Navjot Singh Sidhu put the new January calendar in the freezer

I cry without having a voice.
I fly without having wings.
I bite without having teeth.
I whisper without a mouth.

Who am I?