The old man is working in this factory. I borrowed his bicycle yesterday.Đoạn văn49/50Mark the letter A, B, C or D on your answer sheet to indicate the sentence that best combines each pair of sentences in the following questions. The old man is working in this factory. I borrowed his bicycle yesterday. The old man whom I borrowed his bicycle yesterday is working in this factory.The old man whom is working in this factory, I borrowed his bicycle yesterday. The old man whose bicycle I borrowed yesterday is working in this factory.The old man is working in this factory which I borrowed his bicycle yesterday.Giải thíchC. The old man whose bicycle I borrowed yesterday is working in this factory.