阅读下面短文，根据所给语境，仿照示例E. F.将A-D分别填在空白处，使标题与内容相匹配。 __F__ Sometimes, you don't pass the exam, It doesn't matter. A person is never perfect (完美的). Sometime she also does some terrible things. __ E __ Many people like animals and take them as their pets (宠物), Pet hospitals are very busy. Kind persons who love animals are needed to work in busy animal hospitals. They will teach you how to do the job. __ 1 __ Don't do today's things tomorrow the day after tomorrow. If the class is held up (耽搁), it's difficult to keep up with others. __ 2 __ When we learn English, we should use it as much as possible. We should read more, speak more, listen to English from time to time and practice writing every day. __ 3 __ First, we should eat more fruits and vegetables, And a lso we need to eat a balanced diet. Second, we should do some exercise. Third, should get up early and go to bed early. __ 4 __ If you last grade was a D, you should work hard for a C. Always think: I'll speak in class five times this week, or I'll remember twenty English words a day. A. Do today's work today B. How to keep healthy C. How to learn English well D. Set goals（目标） E. Assistants needed in pet hospitals F. Keep hopeful