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?

It was not until then that I came to know that knowledge _______ only from practice.?

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

It was not until then that I came to know that knowledge ________ only from practice.

1. A.
   had come
2. B.
   has come
3. C.
   came
4. D.
   comes

  It was not until then that I came to know knowledge ____ only from practice.

　 A. had come 　 B. came  C. would come 　 D. comes