is often the case with children, Amy was better by the time the doctor arrived.
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______ is often the case with children, Amy was betterby the time the doctor arrived.
A．It B．That C．What D．As
试题答案
【答案】
D
【解析】从句置于句首只有引导词as可以。as引导的为限制性定语从句，as在句中作主语，指代后面的整个句子。句意：就像孩子们常有的情况一样，等大夫到了艾米的情况就好多了。
【考点定位】考查定语从句