1) nancy has cleaned her room today, and it looks very nice. 2) we have played thius piece of music times, so we know it very well now. 3) you have opened the window, and it is very cold in the classroom now. 4) jack has lost his textbook, and he cannot do his homework now. 5) the school has bought new books, and the teacher will give them to us now. задайте вопросы к этим !