题目内容
The writer tried a MOOC that his friend suggested because it was cheap and possible ________.
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A MOOC is a course in which you may find a lot of subjects and _________to know what the course is like.
People who read everything on the forums won’t have time to finish the lectures, for ___________.
One of the disadvantages of a MOOC is that the percentage of the students who finish the course is ________.
Starting a MOOC, you can choose your favorite course, learn new things and get in touch with _______.
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