练习册

  • 练习册
  • 试题
    -Science is so difficult! -I think you should keep on hard. A. study B. to study C. studying 【查看更多】

     

    题目列表(包括答案和解析)

    — Science is so difficult!
    — I think you should keep on _____ hard.

    [     ]

    A. study
    B. to study
    C. studying

    查看答案和解析>>

    －Science is so difficult!

    －I think you should keep on ________ hard．

    [　　]

    A．study

    B．to study

    C．studying

    查看答案和解析>>


    同步练习册答案