Salut est-ce que quelqu'un peut m'aider s'il vous plaît

Choisis entre le present perfect et le prétérit.

1. (He travelled /He's travelled) to Africa twice already.
2. (Where did you go / Where have you been) last year?
3. (I've never eaten/I never ate) seafood before.
4. (We didn't buy/We haven't bought) any souvenirs
yesterday​