Exercise 4: Put the verbs in brackets: past simple or present perfect. 1. I (receive)  a letter just a few minutes ago. 2. They (live)  in London since 1980. 3. Linda is working in this department. She (work)  here for two years. 4. Up to present, John (do)  good work in the class. 5. (they/ put)  their book on my desk last night? 6. He (study)  English at this school for six weeks up to now. 7. Nobody lives in those houses. They (be)  empty for many years. 8. Cindy is in her office. She (be)  there since 7 o’clock. 9. My sister (come)  to see me last night. 10. My friend George is learning Japanese. He (learn)  it for six months

Để hoàn thành bài tập này, chúng ta cần phải phân biệt giữa thì quá khứ đơn (past simple) và thì hiện tại hoàn thành (present perfect).

1. I received a letter just a few minutes ago. (past simple)
2. They have lived in London since 1980. (present perfect)
3. Linda is working in this department. She has worked here for two years. (present perfect)
4. Up to present, John has done good work in the class. (present perfect)
5. Did they put their book on my desk last night? (past simple)
6. He has studied English at this school for six weeks up to now. (present perfect)
7. Nobody lives in those houses. They have been empty for many years. (present perfect)
8. Cindy is in her office. She has been there since 7 o'clock. (present perfect)
9. My sister came to see me last night. (past simple)
10. My friend George is learning Japanese. He has been learning it for six months. (present perfect)

My friend George is learning Japanese. He has been learning it for six months.

Nobody lives in those houses. They have been empty for many years.

Linda is working in this department. She has worked here for two years.

I received a letter just a few minutes ago.