... EARLIER, I WOULD HAVE DONE IT FOR YOU. A. HAD I KNOWN B. IF I K...

Lớp 12 ĐỀ THI CHỌN ĐỘI TUYỂN HỌC SINH GIỎI LỚP 12 POT

9. ... earlier, I would have done it for you. A. Had I known B. If I knew C. Did I know D. By knowing