Can it be ______ in a fast-changing world we don’t know what to teach our children today?
A.which
B.that
C.why
D.since
网友回答
B解析考查主语从句，该句陈述句为it can be that in a fast-changing world we don’t know what to teach our children today。It作形式主语。句意为在一个快速发展的世界，我们不知道该教我们的孩子什么，这可能吗？