More and more parents began to realise ___beneficial a good education is to their children.More and more parents began to realise ___beneficial a good education is to their children.
A so B how C such D what
(请老师写出详细过程).
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More and more parents began to realise ___beneficial a good education is to their children.
B how
so such 后要接that 从句
what 此处因为修饰beneficial，表示程度，不能用，所以只能用how