V:
Mark the letter A, B, C, or D on your answer sheet to indicate the one that best completes each sentence.
Trả lời câu hỏi dưới đây:
It's essential that every student ______the exam before attending the course.
Đáp án là D. Cấu trúc: It’s essential that + S + V(bare): Cấp thiết là ….