Sagot :
Exercice 1
1. Sam visited...
2. Ray arrived...
3. We went
4. I was
5. She saw
Exercice 2
1. I didn't phone...
2. I haven't titied up my room...
3. Sam hasn't become...
4. We haven't found the map
5. He hasn't spoken Japanese to her
6. They haven't eaten a cake yesterday
7. The cat hasn't played with...
8. You haven't drawn the ...
Exercice 3
1. We left ...
2. My friend traveled...
3. I lived...
4. We worked...
5. She spent
6. We played...
7. Our team won
8. Haven't received...
9. She didn't know...
10. The dog entered...
Exercice 4
1. We have bought some food.
2. They caught a fish
3. He crossed the road
4. They didn't sell cookies
5. She played football