IV.Present Perfect and simple past. 1. I (wait) ________for two hours, but she (not come) ________yet. 2. He (write) ____________ a book since last year. 3. How long ____________you (learn) ____________English? 4. Tom (already finish) ____________his homework. 5. I (read) ____the novel written by Jack London several times before. 6. Mai (never be) ____________ in Hanoi. 7. She (study) _____________ Korean for two years. 1. How many times you (see)………. him since he went to Edinburgh? 2. We are from French. We (be)…………………… there for 20 years. 3. I am sorry. I (forget)…………… that girl’s name already. 4. Mai (lose) ……………….her dictionary. 5. I (wait) ……………………for the manager for two hours. 6. …………….You (ever, see)……………… a lion? 7. . I (work) ……………. very hard for the exam. 8. . I (live) …………….here since 1970. 9. . ………….You (be) to the zoo? 10. I’m afraid you (look) …………….aty the wrong one. 11. Why are the police here? What……………. (happen)? 12.Please stay for dinner, Jane (cook) ……………. a lovely meal. 13. He (learn) ………. English for three years, but he can’t even read a newspaper yet. 14.My teacher (teach) …………..English at this school for six years. 15.Michael (study)………………. English for six month now. 16.Up the the present, George (do) …………good work in this class. 17.Our present boss (work) …………..in this company all of his life.