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
