Bonjour pouvez-vous m’aider pour cet exercice en anglais niveau quatrième SVP

a. Jack has never explored / he has already read /
b. / i have not yet packed /
c. i have been already / I haven't yet walked /
d. have you bought yet / I bought not yet the tickets but i phoned already Matt: he has bought already thé tickets for us !
j'espère t'avoir aidé bonne journée