Terms for subject General containing here is why

English	Russian
And here is why	вот почему (bookworm)
And here is why	и вот почему (bookworm)
oh, so you were away? that's why you weren't seen anywhere around here	ах вы уехали? то-то вас нигде не было видно
that's why you're here	поэтому ты здесь (Alex_Odeychuk)