It was not until then that I came to know that knowledge ___

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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
请问It was not until 最好能翻译下句意思
我觉得应该是现在完成时或是过去完成时,可为什么是D
麻烦分析下ABC不能用的原因

直到那时才.
我直到那时才逐渐认识到,知识只能来源于实践.
照理说,从句的时态要根据主句来定,但涉及到一些真理、规律性的除外.像这句话,知识来源于实践,是规律性的结论,这都要用一般时态的,所以选comes.
明白?

It was not until then that I came to know that knowledge ___ It was not until then that I came to know that practice (mak It was not until the midnight ___ John came home.为什么填that而不填 I came to know it was not easy to easy monwy.中的it必为that行吗? it was not until i had read your letter that i know the trut It was not until recently ___ any idea about that. 1.it was not until she look off her dark glasses that i ___( It was NOT UNTIL 还是UNTIL his mother came in that the boy tur It was not until years later that I was able to fully apprec It was not until he came back from Africa that year that he 英语翻译It was not until I went to junior middle school that I b It was not until liberation that _________ to his hometown.