新概念英语第1册144课练习答案.doc

新概念英语第1册144课练习答案 A1 The writer lives in a very old town which is surrounded by beautiful woods.2 Because it is a famous beauty spot.3 Visitors have been asked to keep the woods clean and tidy.4 Litter baskets have been placed under the trees.5 The writer went for a walk in the woods.6 Yes, he saw a lot of rubbish.7 He saw a sign among the rubbish.8 The sign said, Anyone who leaves litter in these woods will be prosecuted.B1 Someone has aired it. It has already been aired.2 Someone has cleaned them. They have already been cleaned.3 Someone has emptied it. It has already been emptied.4 Someone has sharpened it. It has already been sharpened.5 Someone has turned them on. They have already been turned on.6 Someone has bought them. They have already been bought.7 Someone has swept it. It has already been swept.8 Someone has taken them to school. They have already been taken to school.9 Someone has invited them. They have already been invited.10 Someone has told them. They have already been told.C1 It hasnt been aired yet. It will be aired tomorrow.2 They havent been cleaned yet. They will be cleaned tomorrow.3 It hasnt been emptied yet. It will be emptied tomorrow.4 It hasnt been sharpened yet. It will be sharpened tomorrow.5 They havent been turned on yet. They will be turned on tomorrow.6 They havent been watered yet. They will be watered tomorrow.7 It hasnt been repaired yet. It will be repaired tomorrow.8 It hasnt been dusted yet. It will be dusted tomorrow.9 They havent been corrected yet. They w