Объясните взаимосвязь нравственных позиций члена общества: " Я хочу!", "Я могу!", "Я должен!"

твір роздум на тему шануйте хліб

complete the sentences with the present perfect form of the verbs in brackets !?
He_______________(not call)his friend
Misha_______________(write) a letter to his sister
The children_______________(clean) the forest
She_________________(not walk) the dog
They___________________(buy) a new computer
I_________________________(leave) the book at home