单项选择题
It can be inferred from the passage that the future of online visits will mostly depend on whether ______.
单项选择题 As an on-line narrative, Grammatron is anything but stable because it ______.
单项选择题 Of the following people, who are not involved in the program
单项选择题 By saying that he became sort of dependent on the industry, Mark Amerika meant that ______.