Bonjour5 eme est ce que quelqu’un peu m’aider pour ces 2 exercices svp Merci

Exercice 2 :

a. Harry went home at midnight ! He's very tired today.

b. My books were in my room yesterday, but I can't find them now.

c. I collected stamps when I was young.

d. My ancestor became an American citizen in 1907.

e. The pupils worked very hard for the best.