Who was the last one ______the classroom yesterday?18/64Mark the letter A, B, C or D on your answer sheet to indicate the correct answer to each of the following questions. Who was the last one ______the classroom yesterday?to leaveleftleavinghad leftGiải thíchĐáp án: A Rút gọn mệnh đề quan hệ dạng chủ động với từ chỉ số thứ tự: the + STT+ to+ V.