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EXCERCISE C4 1. He finally got a job; he couldn't continue to sit around doing nothing. He had to turn over a new leaf.

2. When he told his mother that he didn't need to study for the exam because he knew he would get a good grade, his mother responded, "Don't count your chickens before they're hatched.

3. When I asked my friend to do some of my work for me, she replied that I would have to stand on my own two feet.

4. You've been offered this job, and the offer may not remain on the table for too long, so you'd better take this one while you have the chance. You need to strike while the iron is hot.

5. When you guessed that I would get the promotion, you hit the nail right on the head.

6. Before you accept the position, you should find out everything you can about the company. You should look before you leap.

7. She was appointed to the environmental protection committee, and she's really excited because this is something she's been interested in for some time. This is something she can sink her teeth into.

8. Il you want to be the one who gets noticed at work, you need to do all the is and cross all the t's on every task that you do.

9. You need to learn to relax. Every time there's a lot of work to do, you just

run around like a chicken with its head cut off.

10. I really prepared for that exam. It should be a piece of cake.

11. She thinks she should confess what she did, but no one really seems interested in knowing. Instead, she decides to let sleeping dogs lie.

12. He never has to work for anything because his parents will give him anything he asks for. He seems to have been born with a silver spoon in his mouth.

EXERCISE D1

1. Advocacy of technology as the panacea for our environmental woes is not without its detractors.

2. State Highway 227 runs east of U.S. Highway 101, from San Luis Obispo in the north to Arroyo Grande in the south.

3. All four components of the Milky Way appear to be embedded in a large, dark corona of invisible material.

4. Over the last three decades, we have scen a consistent worldwide decline in membership of private-sector international trade union federations.

5. There is not complete agreement on the correlation of the various cultures and the glacial sequence, but many think that the Villafranchion, characterized by crudely worked pebble tools, roughly spherical in form, belongs in the early phase of the First Glacial period.

EXERCISE D2 1. A combination of factors appear to have led to the decline of the beetle, all of them directly or indirectly due to human influence but none conclusively proven.

2. At ground level, ozone is produced by a photochemical interaction of the Sun with gases such as nitrogen oxides and unburnt hydrocarbons.

3. The Army of the Potomac under General George Meade and the Army of Northern Virginia under General Robert E. Lee had stumbled upon each other four days earlier at the edge of this little Pennsylvania county seat of 2,400 inhabitants.

4. With this sudden and vast wealth, by the turn of the century, Trinity Church was an ecclesiastical empire with 8,500 communicants and nine chapels scattered around New York City besides the main church itself.

5. Through modern film footage, this video production retraces the route followed by Meriwether Lewis and William Clark during their epochal two-year 18011806 eight thousand-mile round-trip journey by keelboat, on horseback, on foot, and by canoe up the Missouri River, across the Continental Divide, and down the Snake and Columbia Rivers to the Pacific Ocean.

EXERCISE D3 1. During the era from the end of the Civil War to about 1890, there was a land settlement boom within the United States.

2. By coincidence, the Finnish results were released at the same time that an American study confirmed the cancer-fighting potential of a chemical in broccoli known as sulforaphane.

3. At windswept Kitty Hawk, along North Carolina's Outer Banks, the Wright Brothers National Memorial pays tribute to the brothers and their historic first flight on December 17, 1903.

4. A wide central hall, running past the Garden Court, from one end of the building to the other, has four large cases of souvenirs from both palaces, including a program printed for President Warren G. Harding's visit.

5. Like historians raiding an archive of ancient texts, two atmospheric scientists are sifting through old satellite data, looking for a means of extending ozone records back in time in order to prove or disprove a hypothesis; on the basis of ground measurements made in Antarctica since the 1950s, researchers believe that the annual Antarctic ozone hole first appeared in a mild form during the late 1970s and then grew worse in the 1980s.

EXERCISE