阅读下面材料，在空白处填入适当的内容(不多于3个单词)或括号内单词的正确形式。
Based on recent researches．distance．1earning is slowly proving as      (value)as the traditional campus．based form．It is a fixed truth that this form of learning is      the increase．Moreover, both students and teachers have expressed their       (happy)with these courses．The best part of distance learning courses is their flexible format．Students can continue      (work)and study at the same time without any kind of difficulty．You will       (provide)with the facilities of a virtual(虚拟的)classroom and a virtual campus．Anyone        upgrades their professional knowledge to a new level can apply for these courses．With an online study format，the tests and notes can be       (access)with just a mouse click from your home computer．However, a student       (attend)an online course must take the time management     (serious)．Every online student must keep      in mind that proper management of time and study schedule is the key towards success in this format．