1.It was at that moment that the ________ (鱼鳍) burst out of the water.
答案:fin
2.A whale and a ________ (鲨鱼) live in the ocean.
答案:shark
3.The university will reach its ________ (目标) of 5,000 students next September.
答案:target
4.If you want to pass your exams you'd better change your a________.
答案:attitude