If we …….. the plans carefully, we would not have had so many serious mistakes.

Dũng Lưu Anh · 10/1/22

If we …….. the plans carefully, we would not have had so many serious mistakes.
A. study B. had studied C. studied D. were studying

Nguyễn Tuan Anh · 10/1/22

Đáp án: B
Dịch: Nếu chúng tôi nghiên cứu các kế hoạch một cách cẩn thận, chúng tôi đã không có quá nhiều sai lầm nghiêm trọng.