Why Suika (The Watermelon Game) Is The Newest Addictive Hit On Coolmath Games

I have flunked the exam, that is why i am attending coaching classes.

I have flunked the exam, which is why i am attending coaching classes.

Is there any change in the meaning of sentence.

Why Suika (The Watermelon Game) Is The Newest Addictive Hit On Coolmath Games 3

Why is it that everybody wants to help me whenever i need someone's help?

Why does everybody want to help me whenever i need someone's help?

Can you please explain to me.

Why Suika (The Watermelon Game) Is The Newest Addictive Hit On Coolmath Games 6

Good explanation of why it's optional in this case, although i'm not convinced that reason is the only reasonable antecedent of why.

Why Suika (The Watermelon Game) Is The Newest Addictive Hit On Coolmath Games 7

For example, the explanation why is a common usage,.

Why should the first person pronoun 'i' always be capitalized?

I realize that at one time a lot of nouns in english were capitalized, but i can't understand the pattern of those.