Fill in each numbered blank with one suitable word or phrase Dolphins are sociable creatures. They swim together in group known as (1) . . . . . . . . . . . . . . They show great ability in the water and you can often (2). . . . . . . . . . . . . . . . . . . . . . . . them playing around ships. Dolphins are interested in humans and often rescue people in the sea (3). . . . . . . . . . . . . . . are in danger. They are intelligent creatures and make sounds to communicate with each other. Scientists have studied dolphins (4) . . . . . . . . . . . . . . . . many years and are now looking into the possibility of dolphins (5). . . . . . . . . . . . able to carry out tasks under the seA. Question 5.