The teacher explained the rule to the student.
The teacher explained the rule to the student.
A. The rule was explained to the student.
B. The students were explained the rule.
C. The students were explained the rules to the teacher.
D. A and B are correct

Đáp án A

Explain st to sb chuyển sang BĐ có dạng St be explained to sb
Không có cấu trúc: Explain sb st nên B,C sai.chọn A
DỊCH NGHĨA :Luật lệ được giải thích cho học sinh