The simple past or present perfect? 1. She (just/send).......her mother a letter. 2. I (visit)...... Singapore two years ago. 3. He (live)...............in Nha Trang since 1998. 4. Tam (go) ......... out with his friends half an hour ago. 5. Thanh(learn) ......... English since he (be) ...... ten years old. 6. My son(play) ........ table tennis for ages. 7. They(already/read).......that novel. 8. Nam (not/ see) .......her for three years. 9. Mai (play)............the piano since she (live).............in Hanoi.