IX. Mark the letter A, B, C or D on your answer sheet to indicate the underlined part that needs correction in each of the following questions.
Trả lời câu hỏi dưới đây:
Dogs that are trained to lead the blind must be loyalty, intelligent and calm.
Đáp án là D. loyalty => loyal . Cấu trúc song song: loyal, intelligent and calm: 3 tính từ