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1 ________ all night. (to work)I have been working all night.She _________ the trumpet. (to practise)She has been practising the trumpet.1. We __________ for you. (to wait)2. They____________ a race. (to run)3. He_____________ a book. (to read)4. You_____________ a letter. (to write)5. I____________ the table. (to set)6. It ____________ for hours. (to rain)7. We ____________ here for three years. (to live)8. She_____________ to us. (to speak)9. You_____________ presents. (to buy)10. They ____________ a trip. (to plan)Answers9. Following the model of the example, rewrite the following two affirmativestatements as questions, negative statements, negative questions without contractions,negative questions with contractions, and affirmative statements followed by negativetag questions. For example:They have been enjoying themselves.Have they been enjoying themselves?They have not been enjoying themselves.Have they not been enjoying themselves?Haven't they been enjoying themselves?They have been enjoying themselves, haven't they?1. It has been snowi ng.2. You have been visiting your friends.AnswersANSWERS TO THE EXERCISES for Chapter 4Answers to Exercise 1 :1. have ordered 2. has started 3. have answered 4. have cooked 5. have heated 6. hascleaned 7. has started 8. have knocked 9. have turned 10. has askedAnswers to Exercise 2:1. I've agreed . 2. You've moved . 3. He's looked. 4. We've argued. 5. They've explained.6. You've waited. 7. She's answered . 8. We've finished. 9. It's cooled. 10. I've ordered.Answers to Exercise 3:1. have envied 2. has played 3. have applied 4. have fried 5. have employed 6. hassprayed 7. have hurried 8. have displayed 9. has destroyed 10. have reliedAnswers to Exercise 4:

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