5 речень з додатком поможіть будь ласка!

применение тепловых машин в промышленности

Ex.2. Put the verb in brackets in the Present Perfect or Past Simple tense 1. Have you heard the rules? They _______________(just/elect) a new manager. 2. Martha _______________(find) a new job. She is starting next week. 3. When ______________Simon _______________(arrive) at the cinema yesterday? 4. John is a well-known artist. He ______________(paint) a lot of pictures. 5. John ________________(paint) his first picture in 1980. 6. Mike _______________(win) more than 20 medals when he was a sportsman. 7. I ________________(see) Sting last year. 8. I ______________(speak) to Celine Dion. 9. I _______________(write) 5 letters this week. 10. I ______________(read) this book a month ago. 11. He _______________(still/not/buy) a computer. 12. They ________________(yet/not/find) the way out. 13. _______________you ______________(write) this translation yet? Ex. 3. Put the verbs in brackets in the Present Simple, Present Continuous, Past Simple or Past Continuous 1. What ____________you ______________(look) at? –Some photos I __________(take) when I _____________(be) on holidays. 2. I _______________(be) sorry, but I ______________(not understand) what you _____________(mean). 3. What ___________Jane_____________(do)? – She ______________(be) a teacher, but she ______________(not teach) at the moment. 4. He never _____________(smoke) and ___________usually __________(not eat) meat. 5. Last time I _____________(go) abroad was when I ______________(go) to London. We _____________(stay) in London for three days. On the first day when I ______________(do) the sights, I _____________(meet) my old friend. He ___________just______________(go) to his hotel when we ___________(come) across. 6. ___________you ____________(often, go) to the gym? – I _______________(not go) much at the moment, I ____________(not have) time. I ____________(be) too busy these days. But I ___________(want) to go to the gym next week. 7. Tomorrow Kate _____________(visit) her aunt, that’s why now she _____________(make) a cake. It _____________(smell) delicious! When Kate ____________(visit) her aunt last week, she _______________(buy) some pastries from the baker’s, but they _____________(not be) that good.

Народные преметы ореентирование на местности

Из двух одинаковых железных проволок кузнец сковал по одной цепи. Первая содержит 80 одинаковых звеньев, а вторая – 100. Каждое звено первой цепи на 5 граммов тяжелее каждого звена второй цепи. Сколько килограммов весила каждая проволока? Заранее спасибо(и пожалуйста без уравнений,я ничего не пойму)