1. Look again at the table in exercise 1. Calculate the average speed of Gollob, Olsen
and Crump, in m/s.
2. Now calculate the average speed of all the
riders in km/h.
заранее .)​

9. I (have just remembered) that I (have not paid) the rent yet. I'm surprised that the landlord (has't rung) me up remind me. - It's the first time you (have been) late with the rent in 25 years. He probably thinks that you (have paid) and he (has lost) the cheque. 10. I (have looked) through my old photograph album. It's full of photographs of people whose names I (have completely forgotten). I wonder what (has happened) to them all. 11. I (have been doing) housework all morning and I (have not finished) yet. - I (have done) mine already. I always start at 6 a. m.
12. Why (have you been making) such a horrible noise? - I (have lost) my key and I (have been trying) ro wake my sister by throwing stones at the window. - You (have been throwing) stones at the wrong window.
13.That man (has been standing) at the busstop for the last half hour. Shall I tell him that the last bus (has already gone)?
14. You look exhausted! - Yes, I (have been playing) tennis and I (have not played) for years, so I'm not used to it. 15. George (has been collecting) matchboxed since he left school. Now he (has collected) so many that he doesn't know where to put then.

1. At breakfast, we eat sandwiches.
2. We sometimes write dictations.
3. Do you play chess? No, I do not play chess, but I play checkers.
4. I never go to the gym. But I regularly run on the beach in the morning.
5. In the evening he attends English classes.
6. I often listen to the radio in the morning.
7. They live in the same street.
8. He studies the history of Russia.
9. The girl likes to walk in the park.
10. My brother is very good at playing the violin.
11. Today is a sunny and calm morning.
12. I usually spend the summer with my grandmother in the country.
13. For breakfast, I drink coffee with a sandwich.