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Unit 1 The Changing World Topic 3 The world has changed for the better Section D Present Perfect (III) You__________ (be) in New York for a long time. The city _____________(improve) a lot since I _________(e) here a few years ago. Since it _______(start) , it _____________ (help) hundreds of people return to work and live a normal life . Grammar have been has improved came started has helped Functions 1. Oh, you will _________ it very soon if you e. 2. ________________, it’s a wonderful place to live. 3. You must ______________. 4. Well, once they find people _______, they decide on suitable ways to help them. 5. The program also ________ them ________job training so that they can find jobs again. p