Exercise 4: Fill the spaces in the following sentences by using " for" or "since": 1. I have known that _____ a long time. 2. She has driven the same car _____ 1999. 3. I haven't played tennis ____ last summer. 4. He hasn't eaten anything ____ twenty-four hours. 5. I have been awake ____ 4 o'clock. 6. The strike has lasted ____ six months. 7. We have been good friends ____ we were at school together. 8. I have earned my own living _____ I left school. 9. He has been in prison ______ 10 years. 10. Nobody has seen him _____ last week. Exercise 5: Use the correct tense form of the verb in the blanks. 1- Is this the first time you (ride) a motorbike? 2- Last Sunday I ( shop) in the An Duong Market. 3- I was writing a letter when he (enter) the room. 4- We ( not know) her address so far . 5- The accident (happen) while he was driving on a highway. 6- Mrs Lan ( teach) in our school for 20 years now. 7- The babies ( sleep) since 4 o’clock. 8- This is the most interesting film we ever ( see). 9- You ( receive ) his invitation yet ? 10- I (meet) her two years ago and we ( be ) good friends ever since. Exercise 6: Complete the sentences , use the present perfect or past simple of the verbs in brackets : 1. ( you/ watch) the news on TV last night ? 2. I (not/ see) him for months. 3. ( you/ ever/ win ) a competition ? – Yes. I ( win) a photographic competition in 2001. 4. He smiled at me in a friendly way when he ( see) me. 5. They ( be ) famous in my country for years . 6. The last time I (go) to the Disney land was last May. 7. ( you/ meet ) John when you were at the university? 8. We ( live) in this flat since we got married. 9. She ( work) so hard this week. 10. There aren't my buses because the drivers ( go) on strike. Exercise 7.Give the correct form of the verbs in brackets (in the simple past or the present perfect tense): 1.We (study) a very hard lesson the day before yesterday 2.We (study) almost every lesson in this book so far. 3.We (watch,never) that television program. 4.We (watch) an interesting program on television last night . 5.My wife and I (travel) by air many times in the past. 6.My wife and I (travel) to Mexico by air last summer 7.I (read) that novel by Hemingway several times before. 8.I (read) that novel again during my last vacation . 9.I (have) a little trouble with my car last week. 10.However,I (have) no trouble ( rắc rối ) with my car since then. Exercise 8.Give the correct form of the verbs in brackets (in the simple past or the present perfect tense): 1.I (have ) this toy since my birthday. 2)We (live )in HN for ten years now and like it a lot. 3)The last time I (go) to HN was in May 4)When my parents were on holiday I ( stay) with my aunt for a week 5)I (not see ) my son for ages .He (not visit ) me since May 6) Tom ( be) to HN twice .He loves it very much 7)My sister (work ) for that company for two years 8)I (move) to HN in 2001 .I (be ) there a long time now 9)It was so cold today that I (wear) a sweater at school 10)So far this month there (be ) three robberies in this street 11)When I was young I (meet )him three times 12)In the past few years ,it (become ) more and more difficult to get into university 13)I (feel ) better since I ( live) here 14) Since I (be ) in this city I ( not see) him