Вставте слова в нужной форме: the telephone rang at about midnight. a worried male voice informed the emergency service that three children (not arrive) at home yet. the man explained that his two sons, alan, 15, and johnny, 13, and their twelve-year-old cousin gabriel (leave) for a bicycle ride. the man sounded very nervous as if he suspected that something bad (happen) to the boys. there was no doubt that our help (need). i had to ask a few questions to understand the details. it turned out that the children enjoyed riding in the hills which were four kilometres away from their house. the rescue party headed right there. the rescuers saw the boys when they (move) down the hill. they were walking slowly and awkwardly. two of them were helping the third boy — his leg (break) and he was screaming with pain. later, he told me that they (practise) extreme riding. unfortunately, things like that happen quite often. i (work) for the emergency services for about five years and have seen lots of kids suffering the consequences of taking extreme risks. when they ignore safety rules, they easily get injured. they behave carelessly as if it (be) a game, but without very careful preparation, extreme sport is a very dangerous activity.
left
had happened
was needed
were moving
was broken
were practising
have been working
is