1) Nine volunteers recently went to live at Paignton Zoo in south-east England. They (A1) … part in an experiment to be shown on TV. a) were taking b) were taken c) are taking d) take e) will take 2) The idea was that modern diets, which are often full of processed foods, sugar and fat, cause a lot of health proble ms. For 12 days, the volunteers (A2) … nothing but raw fruit and vegetables.  a) were eaten b) ate c) are eating d) eat e) are eaten 3)  The diet (A3) … on research showing that eating as much as five kilos of fresh fruit and vegetables each day could have a positive effect on cholesterol levels and blood pressure.  a) bases b) would base c) will be based d) was based e) had based 4) Among the volunteers was Jon Thornton, an overweight driving instructor, who (A4) … vegetables since childhood. a) hasn't eaten b) hasn't been eating c) didn't eat d) wasn't eating e) hadn't eaten 5) Over 12 days, he lost 5.7 kg, and reduced his cholesterol by 20 per cent. His blood pressure also fell. For Jon, life (A5) … since he left the zoo. a) changes b) is changing c) changed d) had changed e) has changed 6) He can now play football because his knees no longer hurt under the extraweight and he (A6) … cycling.  a) goes b) was gone c) had gone d) went e) is gone

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