the important p__ is to work hard

the important p__ is to work hard It is p__ for us to finish the work before 5 o'clock To study hard is the most important d____ of students. It is the most important for you to study hard . The s___of the success is to work hard It's important to work hard.But relaxing yourself is also ve work hard is of great important to us这句话中为什么有个of? dreaming and hard work,which is more important to a person`s the math problem is too hard to work ------out The best way to success is hard work Hard work is the key to ____(succeed)为什么, Hard work is the key to ___(succed).