Circle the best answer A, B or C to complete the text about special dogs. Most dogs are good (0) ________ swimming but these dogs are very, very good at it. They are dog lifeguards and they work on beaches in Italy (1) ________ the summer. They jump from helicopters and fast boats (2) ________ help people in danger in the water. 'Dogs don't get tired as quickly as we do, says Emilio. A dog is strong and it can (3) ________ fast. It gets to a swimmer faster than we can and then (4) ________ pulls the person back to the beach! It takes three years to teach these dogs everything they (5) ________ to know. (6) _______ they are ready to do their jobs. 0. A. on B. at C. in 1. A. during B. on C. since 2. A. but B. or C. and 3. A. swam B. swim C. swims 4. A. it B. they C. you 5. A. can B. need C. should 6. A. When B. After C. Then