题目内容
It was not until then that I came to know that knowledge _______ only from practice.?
A. had come B. has come
C. came D. comes?
D?
解析:
主句虽然是过去时态,但从句所说明的是不受时间限制的真理或事实,名词性从句的谓语动词仍然用一般现在时。又如:He said Asia is the largest continent.
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