Soluzioni Unit 12

(1)

Soluzioni degli esercizi del libro

Unit

₁₂

Text and dialogue – page 137

1. The technique to make an impression tray - 2. No, never - 3. Take an impression in a stock tray, then cast some plaster into the impression. Take a sheet of shellac, heat it up, conform it to the model and make a new tray - 4. He has built a handle for his special tray - 5. Because he has often built special trays - 6. He asks if he has covered the wire ends - 7. To protect them from heat - 8. To smooth the tray - 9. Yes, it has - 10. In the patient’s mouth

Practice – pages 144 and 145

Exercise 1 1. have called - 2. has prohibited - 3. have / called - 4. has acted - 5. have promised - 6. has answered - 7. has / Just arrived - 8. has / finished - 9. has called

Exercise 2 1. has been - 2. have / told - 3. have given - 4. have done - 5. has bought - 6. has / told - 7. have bought Exercise 3 1. have / arrived - 2. has / arrived - 3. have / seen - 4. have / been - 5. has / taken off - 6. have / been -

7. have been - 8. has / bought

Exercise 4 1. have / been - 2. Have / had - 3. Have / driven - 4. Has / felt - 5. have / eaten - 6. have / been - 7. has / bought Exercise 5 1. have made - 2. bought - 3. studied - 4. has done - 5. has seen - 6. has come back - 7. went

Exercise 6 1. for - 2. since - 3. since - 4. for - 5. since - 6. for - 7. for

Exercise 7 1. I’ve lived in London for ten years - 2. I’ve played baseball for four years - 3. Mary has known Grant since March - 4. John has been on holiday since Saturday - 5. I’ve studied English since 2005 - 6. She hasn’t eaten anything since breakfast

Exercise 8 1. had / started - 2. had lived - 3. had eaten - 4. had / left - 5. had finished - 6. had forgotten

Exercise 9 1. hadn’t finished - 2. hadn’t eaten - 3. hadn’t cleaned - 4. hadn’t been - 5. hadn’t met - 6. had / used Exercise 10 1. John has been praised by/ had been praised by the teacher for his work - 2. This church has been built / had

been built by them in 1460 - 3. Our old car has been sold / had been sold by us - 4. All the apples have been eaten / had been eaten by John - 5. His notes have been given / had been given by Tom to the classmates Exercise 11 1. One inch corresponds to two and fifty four centimeters - 2. My dog weighs five kilos - 3. How many

kilometers are ten miles? - 4. John has just gone to the cinema - 5. Good evening, Miss, here I am - 6. Good morning, Sir, here is my homework - 7. All right, Grant; you have done a good job - 8. I haven’t finished working yet - 9. We’ve often been to that laboratory - 10. The bill had been paid - 11. John has just gone to the cinema - 12. The bridge hadn’t been repaired yet

FROM THE WEB WORLD – page 147

1. Blue: Has been created - has been housed - 2. Red: None - 3. Green: Has reached - have… featured - 4. It’s the first rap battle uploaded to YouTube - 5. It’s often filled with several historical references or jokes - 6. It was created by Peter Shukoff - 7. No, later episodes have regularly featured guest appearances - 8. On its own YouTube channel - 9. They are both leaders and explorers in search of a New World - 10. Because the first is the King of Pop and the latter is the King of Rock and Roll