问题
选择题
_____ in this university that only those who have passed CET4 can graduate. [ ]
A. What is required
B. What requires
C. It requires
D. It is required
答案
答案：D
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_____ in this university that only those who have passed CET4 can graduate. [ ]
A. What is required
B. What requires
C. It requires
D. It is required
答案：D