问题描述：
It作先行主语和先行宾语句型
It作先行主语和先行宾语的一些句型
She had said what it was necessary to say.
请解释下上面这个例子,再举些例子.
It作先行主语和先行宾语的一些句型
She had said what it was necessary to say.
请解释下上面这个例子,再举些例子.
问题解答：
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