En cada oración hay un error gramatical en el uso del tiempo pasado. Encuéntrelo y elija la opción correcta de la oración con Past Perfect, si la acción ocurrió antes de otro evento en el pasado.
Ejemplo:
❌ When the teacher came into the classroom, the students finished the test.
✔ When the teacher came into the classroom, the students had finished the test.
1. When I arrived at the office, the meeting started already.
2. She was upset because she forgot about the appointment earlier.
3. When we got to the station, the train left.
4. He was tired because he worked all night.
5. By the time I called him, he went home.
6. They were late because they missed the bus earlier.
7. She couldn’t open the door because she lost the key.
8. When we arrived at the party, everyone went home.
9. After she finished her homework, she went to bed.
10. I realized that I forgot my wallet at home.
11. By the time we arrived, the show began already.
12. She didn’t recognize him because she didn’t see him for many years.
13. When they entered the room, the teacher finished the explanation.
14. He couldn’t answer the question because he didn’t read the article before.
15. When we reached the airport, the plane took off.
✅ You will find the answers to all the exercises at the end of the page.