问题
(2013·苏南四校3月联考)Everybody knows about it now! But no one knows ________ once prevented the rumor from spreading.
A:what was it that
B:what it was that
C:how it was that
D:why it was that
B:what it was that
C:how it was that
D:why it was that
正确答案是：
同类题型
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