根据短文内容和首字母的提示，把所缺单词填写在横线上。

Many students often c  1    about school. They might feel they have too m  2    work to do sometimes, or think the rules are too s 3    . We must learn how to change these “problems” into “challenges”. Education is an important part of our d 4     . As young adults, it is our d 5      to try our best to deal with each challenge in our education with the h 6    of our teachers.