Bonjour quelqu’un pourrait me faire mon deuxième devoir d’anglais svp merci d’avance

Bonjour

a- I have been knowing  Tuvalu for years now.

b- Have you made any progress to find Tuvalu on the beach ?

c- How long have you been looking for it ?..........

d- No one will believe me if I say I have been on Tuvalu already.

e- She has been rowing for ten minutes against the current.

f- She has made this crown out of tropical leaves and flowers.

Le present perfect progressif  insiste sur la durée de l'action

bonne journée ☺☺☺