Read the text below and think of the word which best fits each space. Use only one word in each space: PENGUINS ON THE MOVE For years, the penguins at San Francisco Zoo were happy 1) .their lives. They used to go for the occasional swim during the summer, but spent the winter resting in their burrows - only coming 2) ………………at mealtimes when fish was provided for them. Then one day, six new penguins, 3) ......had been entertaining the visitors at a theme park in San Diego, arrived to share the pool. These new arrivals immediately dived in to show off their swimming skills. Ever 4) pool has been alive with fifty-two birds swimming around nonstop, 5) long journey. ....... ....... that moment the if they were going on a ...... "6) ........ I know a lot about penguins, "said one zookeeper, "I don't know 7) ....... to explain this. It's 8) watching fifty-two tuxedos going round in a washing machine!"Scientists, 9) think they may have the answer. Apparently, penguins are very social and inquisitive birds, and 10) new individuals join a group, they always create a lot of interest.​