If I had the sentences available, it'd easier. But it is still easy to find out what the answer is. First, you need to translate the sentences.
Martin: I like sports. What are your favourite sports?
The answer would be something like: "my favourite sports are..." hence "mis deportes favoritos son..."
Which verb correctly completes the sentence? Fernando y yo __________ al mercado el domingo pasado.?
Answer : Fernando y yo fuimos al mercado el domingo pasado.
Explanation : The subject is "Fernando y yo", that's plural, so the verb must be conjugated in third plural person. The time expression "el domingo pasado" indicates that the verb must be in the past.
Hope this helps!