18. 밑줄 친 It[it]이 가리키는 것으로 적절한 것은? [1점] It's not always easy to tell what's it and what's not. Sometiems, it's accidental--you really intended to do your own work, but instead ended up with some sentences that sound just like something you've read. It is a shortcut that enables you to save time for thinking about any subject, gathering your own thoughts about it..