单选

John______he could improve his exam results, but he did not have enough time to study.

  • A.knows how
  • B.knows that
  • C.knew how
  • D.knew that
参考答案
您可能感兴趣的试题
¥

订单号:

遇到问题请联系在线客服

订单号:

遇到问题请联系在线客服