Question

Is it raining ?
(afirmação) ................................ and my umbrella is at home .

Answer 1

Olá!
Conceito Envolvido: # Present Simple

Temos a pergunta, is it raining? -> A resposta é dada invertendo-se o "is" com "it". Daí:
It is raining and my umbrella is at home.

Espero ter ajudado! :)

Answer 2

Is it raining? (interrogativa)
Yes, it's raining and my umbrella is at home (afirmativa)