问题
选择题
The first thing we should do is to protect the wild animals .
A．that
B．which
C．what
D．how
答案
答案：A
修饰名词是一个句子为定语从句，若先行词是物，关系词可用which或that，但
先行词前有序数词时，通常用that，故选A。
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The first thing we should do is to protect the wild animals .
A．that
B．which
C．what
D．how
答案：A
修饰名词是一个句子为定语从句，若先行词是物，关系词可用which或that，但
先行词前有序数词时，通常用that，故选A。