I don’t think he ____________in the thirty years I _______________ ...

★ Mixed Tenses

I don’t think he ____________in the thirty years I _______________ him.

A. has changed/have known

B. had changed/have known

C. had changed/had known

D. has changed/knew

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When we see Mr. Minh tomorrow, I ________________ him of that.

A. remind

B. will remind

C. reminded

D. have reminded