1. It just rained!
2. Dũng just went to the supermarket.
3. I have watched the movie Titanic three times already.
4. I have been learning English for 5 years.
5. Yesterday, he went home, had dinner, checked his email, and went to sleep.
6. This year, I have visited three major cities in Vietnam.
7. I have been waiting for two hours, but she still hasn't arrived.
8. Up to now, we have studied almost all the lessons in the book.
9. Tim has never been to an opera concert before.
10. I have never watched a horror movie alone.
11. She asked if I graduated from university in July last year.
12. They have been married for 5 years.
13. Have you ever seen a crocodile?
14. What is the best dish you have ever eaten?
15. We had good preparation before the exam.
16. Chemistry is the hardest subject I have ever studied.
17. My brother has been to 20 countries.
18. We have been friends since we were kids.
19. William still hasn't cleaned his room.
20. Yesterday, Susan missed the bus, so she had to walk to school.