: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.