When he was alive, the old scientist used to say that knowledge ＿＿＿＿from practice and he gained his experience by doing a lot of practical work.

A.was coming     B.had come  C.comes     D.would come

When he was alive, the old scientist used to say that knowledge ＿＿＿＿from practice and he gained his experience by doing a lot of practical work.

A.was coming     B.had come  C.comes     D.would come

When he was alive, the old scientist used to say that knowledge ＿＿＿＿from practice and he gained his experience by doing a lot of practical work.

1. A.
   was coming
2. B.
   had come
3. C.
   comes
4. D.
   would come

.When he was alive, the old scientist used to say that knowledge ＿＿＿＿from practice and he gained his experience by doing a lot of practical work.

A.was coming B.had come

C.comes D.would come

When he was alive, the old scientist used to say that knowledge ＿＿from practice and he gained his experience by doing a lot of practical work.

A. was coming    B. had come    C. comes      D. would come