Which one is correct? How to choose preposition? Interests can bring more passion for your job. Interests can bring more passion to your job. Interests can bring more passion about your job.

Should we always be polite to others? There is no denying that always being polite to others is very important for us to get on well with others and thus helping deal with trouble, especially when we refer to trouble in our daily lives. Always being polite will make others easy to accept you and your opinion. This point is much crucial for teacher to correct students' problems. One illustrative example being my brother Jim, he is a math teacher in high school. So polite he is that everyone who knows him likes him very much. He is also so polite to his student; every time his students make any mistakes, he will talk with them patiently. And it is really useful for students to accept his advices. From this point of view, if you want to make others agree with you on your opinion, it is better for you to be polite to others. However, plausible as the above scenario may seem, it is still irrational to overstate its significance because sometimes it is no use to be polite to solve problems, especially when we focus on emergencies. For example, you should not count on policeman be polite to the criminals, who are threatening others' lives. When people's lives are under threatened, the best way to solve this problem is not being polite to criminals. The only thing we should do is forcing to subdue them, thus ensuring others’ lives and safety. It is these impolite measures that are useful to deal with emergencies sometimes.

Does difficult jobs make people much happier? Admittedly, there is no denying that challenging a difficult job can give people a sense of achievement, especially when we refer to those experienced people, who have been worked in their field for a long time. By dealing with a hard work, not only can these people get a sense of success, but also they can learn how to conquer difficulties from troubles. One illustrative example being my uncle John, he is an experienced chemist in our university. He loves chemistry so much and he always try to lead challenging and difficult projects in compounds labeling. Although most of these projects are costly and hard to conquer, he and his teammates always work so hard and finally solve these problems. Having completed these researches, not only can he win more research investment, but also he can accumulate more knowledge about that research. It is challenging difficult jobs all the time that gives these experienced people more chance to win. However, plausible as above the scenario may seem, it is still irrational to overstate its significance because difficult jobs can also make people feel frustrated, not least when we center on those freshman. People who have little knowledge about one field will surely be sad when they encounter a challenging job in that field. If one people are compelled to take a difficult job, they will lose their confidence and interest when they fail to complete it. For example, my little cousin is seven years old. He liked music very much in the past, until one day his father compelled him to play piano. It is so hard for seven years old boy to play piano well. Soon, my cousin lost his interest in music. Thus, from this point of view, it is not a good idea to compel freshman to take hard works.

When use 'much' and when use 'more'? Which one is right? It will be much expensive. It will be more expensive. It will be much more expensive.

Which one is right? There is already a new bookstore. We don't need to build another one. There has already a new bookstore. We don't need to build another one. There already has a new bookstore. We don't need to build anoter one.