单选题 My telephone number is 5436236. Have you ______?
  • A. written them down
  • B. written down it
  • C. written it down


【正确答案】 C
【答案解析】当代词作动副短语的宾语时须放在该动词和副词之间，此外电话号码为单数概念，故C为正确答案。