问题
选择题
(2013·陕西，16)________ is often the case with children，Amy was better by the time the doctor arrived.
A．It
B．That
C．What
D．As
答案
考查定语从句。此处as引导的定语从句位于主句之前，指代整个主句内容。句意：正如孩子们常有的情况一样，医生到的时候Amy就好了。
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