Question

:use the past indefinite or the present perfect instead of the infinitives in brackets: 1) how long you ( to know) him? - i (to know) him since 1965 . 2) he (to live) in leningrad for two years and then ( to go) to siberia. 3) when he (to arrive) ? - he (to arrive) at 2 o' clock. 4) i (to read) this book when i was at school. 5) i can't go with you as i (not to finish) my work. 6) the clock is slow.- it isn't slow, it (to stop) 7) you (to have dinner) yet? 8) the performance (to begin) at 7 o' clock and (to last) for 3 hours. we all (to enjoy) it. 9) the lecture just (to begin). you are a little late. 10) we (to miss) the tram. now we'll have to walk. 11) you (to be) here before? - yes, i (to spend) my holidays here last year. 12 ) you (to see) kitty on monday? 13) where is tom? - i (not to know). i (not to see) him today. 14) i (to lose) my pen. you (to see) it anywhere? 15) you ever (to try) to give up smoking? 16) why you (to switch on) the light? it is not dark yet. 17) when it (to happen)? 18) he (to leave) for the far east two years ago and i (not to see) him since. 19) the last post (to come) ? 20) when you ( to meet) him last? 21) you ( to be) to the laboratory this week? 22) why you (to take) my pen while i was out? you ( to break) it.

Answer 1

1) How long did you know him? - I have known him since 1965 . 2) He lived in Leningrad for two years and then went to Siberia. 3) When did  he arrive ?- He arrived at 2 o' clock. 4) I have read this book when I was at school. 5) I can't go with you as I have not finished my work. 6) The clock is slow.- It isn't slow, it  stopped 7) Have you had dinner yet? 8) The performance began at 7 o' clock and  lasted for 3 hours. We all  enjoyed it. 9) The lecture has just  begun. You are a little late. 10) We have missed the tram. Now we'll have to walk. 11) Have you been here before? - Yes, I spent my holidays here last year. 12 ) Did you see Kitty on Monday? 13) Where is Tom? - I don't know. I have not seen him today. 14) I have lost my pen. Did You see it anywhere? 15) Have You ever tried  to give up smoking? 16) Why did you switch on the light? It is not dark yet. 17) When did it  happen? 18) He  leaved for the Far East two years ago and I haven't seen  him since. 19) Did the last post  come ? 20) When did you meet him last? 21)  Have You been  to the laboratory this week? 22) Why did you  take my pen while I was out? You have broke it.