Question

l_____have gone if l_____received your letter
a)could-have
b)would-had
c)would-have
d)would-did

Answer 1

Resposta: I would have gone if I had received your letter.

would - had

Explicação: no third conditional é preciso usar > past perfect + would have + past participle < como base

Answer 2

letra A, confia que tá certo =)