today£¬ there are many avenues open to those who wish to continue their education. however£¬ nearly all require some __1__ in one’s career in order to attend school full time. part-time education£¬ that is£¬ attending school at night or for one weekend a month£¬ tends to drag the __2__ out over time and puts the completion of a degree program out of reach of many people. __3__£¬ such programs require a fixed time commitment which can also impact __4__ on one’s career and family time.