present perfect, past simple or past perfect  1.  My father (to start) ______ snring when he ____ ( to be) 50. 2.  My assistant ____( to print) out the documents before I ______ ( to come) to the office. 3.  THe vegetables are in the fridge. We _____( already/to go ) shopping. 4.  Mary's mother-in law ____( to pick up ) her litter before the police officer _____ her 5.  Jacob ____( to draw) a new scheme yesterday morning . 6.  The best interviewer ______ ( to phone) our manager this week . 7.  Max ___ (to be) furious the day before yesterday. That is because he _____ (to quarrel) with his my neighbor. 8.   I ____( to have) breakfast, ______(to wash) up and (to leave) for work. 9.  Noah _____(never / hear) about this custom. 10.  There is a wide range of dishwashers. They _____ (to update) the catalogue.

Để giải các câu hỏi trên, chúng ta cần hiểu về cách sử dụng present perfect, past simple và past perfect trong tiếng Anh.

1. My father (to start) ______ snoring when he ____ ( to be) 50.
- Trả lời: My father started snoring when he was 50.

2. My assistant ____( to print) out the documents before I ______ ( to come) to the office.
- Trả lời: My assistant had printed out the documents before I came to the office.

3. The vegetables are in the fridge. We _____(already/to go) shopping.
- Trả lời: The vegetables are in the fridge. We have already gone shopping.

4. Mary's mother-in law ____(to pick up) her litter before the police officer _____ her.
- Trả lời: Mary's mother-in-law had picked up her litter before the police officer saw her.

5. Jacob ____(to draw) a new scheme yesterday morning.
- Trả lời: Jacob drew a new scheme yesterday morning.

6. The best interviewer ______ (to phone) our manager this week.
- Trả lời: The best interviewer has phoned our manager this week.

7. Max ___ (to be) furious the day before yesterday. That is because he _____ (to quarrel) with his neighbor.
- Trả lời: Max was furious the day before yesterday. That is because he had quarreled with his neighbor.

8. I ____( to have) breakfast, ______(to wash) up and (to leave) for work.
- Trả lời: I had had breakfast, washed up, and left for work.

9. Noah _____(never / hear) about this custom.
- Trả lời: Noah has never heard about this custom.

10. There is a wide range of dishwashers. They _____ (to update) the catalogue.
- Trả lời: There is a wide range of dishwashers. They have updated the catalogue.

{
1. My father started snoring when he was 50.
2. My assistant had printed out the documents before I came to the office.
3. The vegetables are in the fridge. We have already gone shopping.
4. Mary's mother-in-law had picked up her litter before the police officer stopped her.
}