日日人人_亚洲美女在线视频_av手机在线播放_国产大片aaa_欧美中文日韩_午夜理伦三级

Every minute is made full use of _______ our lessons.

A. studying     B. to study      C. study    D. being studied

Every minute is made full use of ________ our lessons.

    A. studying         B. to study         C. study            D. being studied

Every minute is made full use of ________ our lessons.

    A. studying     B. to study     C. study    D. being studied

 Every minute is made full use of ___ our lessons.

   A. to study           B. studying       C. studied             D. study

Every minute is made full use of ________ our lessons.