1/. Complete the sentences. Put for or since into each gap. Ex: I have known her for three days. 1 It has been raining…………..lunch time. 2.My boss will go away…………………the next ten days. 3.I’m staying in England…………………a year 4.She has lived in London…………………1985. 5.Please hurry up! We have been waiting…………………an hour. 6/I have known her…………………January. 7.Nam’s father has worked in this company…………………20 years. 8/Have you learned English…………………a long time? 9/ I haven’t seen Tom ………………… we left school. 10/The house is very dirty. We haven’t cleaned it…………………ages/ years. Exercise 4 : chia động từ trong ngoặc đúng thời 1/ My wife and I (be)………………………… there several times in the past. 2/ We (study) ………………………… almost every lesson in this book so far. 3/ He (visit) ………………………… his friends recently. 4/ - You (see) …………………………her today ? - No, I haven't seen her yet. 5/ She (do) …………………………her homework already. 6/ They never (go) …………………………to the cinema in their life. 7/ Tom, I (not see) ………………………… you for ages ! Where have you been ? 8/ He is the most kind-hearted man I ever (meet) …………………………. 9/ There (be) ………………………… 3 accidents on this street in the past 3 days. 10/ Is this the first time you (visit) ………………………… our beautiful country ? 11/ Scientists (find) ………………………… cures for many illnesses in the last 50 years. 12/ My uncle's health (improve) ………………………… since he (leave) ………………………… India. 13/ I (buy) ………………………… a new shirt last week but I (not wear) ………………………… it yet. 14/ I (not see ) …………………………Lan since we (leave) ………………………… school. 15/ We just (move) ………………………… to a new house but we (be) …………………………dissatisfied with it. 16/ He (live) ………………………… in London for 2 years and then (go) ………………………… to Edinburgh. 17/ - I (lose) ………………………… my black gloves. You (see) …………………………them anywhere? - No, I’m afraid I ….. When you last (wear) …………………………them? - I (wear) ………………………… them at the theatre last night. - Perhaps you (leave) …………………………them at the theatre. 18. You ever (try) ………………………… to give up smoking? - Yes, I (try) last year, but then I (find) ………………………… that I was getting fat so I (start) ………………………… again. 19. He (lose) …………………………his job last month and since then he (be) ………………………… out of work. - Why he (lose) ………………………… his job? - He (be) ………………………… very rude to Mr Pitt.