Упражнение№ 1. Раскройте скобки. 1. James is in his room, he is playing there since the morning. 2. For 3 hours now we have been chatting about it and we haven’t come to any decision yet. 3. Jane, do you know where my hat is? I have been looking for it for half an hour and I can’t find it. 4. Your cousinr is dancing with that red-haired girl since she came into the room. 5. He has been trying to solve this problem for several months now but he hasn’t found a solution yet. 6. He has been teaching at school for twenty years. 7. Mr. Smith is working in his room since early morning. 8. The children have been sleeping for 5 hours.