Use of English PRO

The arctic tern (1) IS a water-loving bird that hatches during summer in the Arctic, the northernmost (1) ............ of the Northern Hemisphere. During the unbearably cold, dark arctic winter, the arctic tern flies south, following the summer season all the way to the Antarctic (2) ............ on the other side of the Earth. Because arctic terns do not fly in a straight line, the (3) ............ they fly every year is even longer than the approximately 30,000-kilometer from pole to pole. This (4) ............ the arctic tern's migration one of the longest of any animal on Earth. Like a lot of other birds, fish is (5) ............ arctic terns eat. They catch fish by gliding (6) ............ the ocean, then plunging their feet or beaks in the water to skim fish near the surface. Rarely, arctic terns will snatch flies or (7) ............ insects out of the air, but they prefer fish and other marine creatures, such as shrimp. Arctic terns have beaks and webbed feet, both of (8) ............ are almost the same shade of tomato-red. They have gray-white bodies and a head of jet-black feathers, which looks almost like a baseball cap.