问题
选择题
He is, however, one of those restless people who never ___ content with their present environment.
A．have seemed
B．seemed
C．seems
D．seem
答案
答案：D
根据句意，此句在描述一个现在的事实，应用一般现在时态，定语从句的谓语动词的数应和先行词保持一致，所以答案D。
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