When I had finished the report, I went out for a cup of coffee30/30When I had finished the report, I went out for a cup of coffee.Finishing the report, I went out for a cup of coffee.Having finished the report, i went out for a cup of coffee.Going out for a cup of coffee, I finished my report.To finish the report, I went out for a cup of coffee.Giải thíchChọn đáp án B Giải thích : danh động từ đầu câu thuộc về chủ ngữ “I” ở sau.