CHỌN TRONG SỐ A, B, C HOẶC D THÍCH HỢP NHẤT VỚI CĐU ĐÊ CHO

19.Chọn trong số A, B, C hoặc D thích hợp nhất với cđu đê cho:Peter did not study his lesson yesterday, and he did not answer the questions.A. If Peter had studied his lesson yesterday, he would have answer the question B. If Peter studied his lesson yesterday, he would answer the question C. If Peter had studied his lesson yesterday, he would have answered the question D. If Peter studied his lesson yesterday, he would answer the question