If only the Prime Minister x his arts policy would lose him the election

Câu hỏi :

If only the Prime Minister x his arts policy would lose him the election.

A. had known

B. knows

C. was knowing 

D. could have knowing

* Đáp án

* Hướng dẫn giải

  Đáp án là A. Câu điều kiện loại III: If + S + had + PII, S + would + have + PII.

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