-I’m losing my eyesight, I’m afraid. -To finish this book, you in front of your

—I’mlosing my eyesight, I’m afraid.

  —To finish this book, you ______ in front of yourcomputer too long.

    A. work                       B.are working                   C.have been working               D.worked

试题答案

【答案】

C

【解析】

试题